After the Trial of the Gifted, the Video on the main page, and some other beginning stuff I did not find the whole "Lack of Intro" thing that problematic.
I honestly never saw the part of the Tutorial that told me how to use my skills but it may have been there. I just managed to figure it out. I do recall it showing me that I had a character sheet and that there were skills there and from that I managed to deduce that I needed to get them to my bar which I managed. One thing that would be insanely nice there is to make it so if you click and hold the skill icon ON your bar that you can move it to another spot on your bar including overwriting something already there.
A common stretching story arc does seem a tad bit missing in some aspects though. I feel like Link from the Legend of Zelda where though I know who my main Villain is (The Aegis) I am more frequently off killing anything BUT that Villain in order to fulfill side quests. THE TENTH CHICKEN!!! (Points for getting that joke)
A bit more focus on the Aegis themselves could be good and while there is SOME focus on them there should be a bit more. I also think Town Marshals and Trophy Hunters should be looking for Aegis/Undead kills and parts more than just random beasts. I mean would they not be MOST concerned about the vast Army of undead coming to KILL EVERYONE? Would not proof of having killed a Mighty WA be quite the Trophy?
My biggest frustration early on (and even still) however was Coin. If you want to do ANY Crafting you will need LOTS of Coin. You cannot sell what you make for much more than a pittance (because you cannot sell to players for much at all) and yet making things costs you money. You have to buy Forms which are way too expensive compared to your earning Potential. You need to buy some Techs which are a bit easier on the Wallet than Forms but not by a huge degree. You need to at times buy Comps because you do not stand a chance of getting them yourself without the item you are trying to MAKE equipped. If you dare to have a Plot (which is obviously extremely ill advised before lvl 100 in many crafting schools...) then first you need to either be in the Guild or manage to pull a Gold or More from some orifice which is not happening any time soon. You will also ultimately be faced with Teleport Charges (if you do not know which portals to use which is plain silly) and these get worse if building plots Due to Disk charges. So before you know it you are extremely Broke and can hardly progress.
Considering that Craft Grinding is the most monotonous and boring of the grinding, types in Istaria because you do not get any reward as you go up (unlike the new ability every 2 levels from Adv Grinding) and you do not get any money for doing it (unlike Adv Grinding again), having to do a lot of it only to become broke can be a really serious turn off. I would have quit on that point myself if it was not for finding a Guild and some RP partners.
I do thank the staff on this part for adding in the quests in NT that GIVE you Forms and some Coin to boot because you NEED that help but once those are over it is all down hill from there.
Now mind you, the Grind and Coin Black Hole part of Crafting I have issue with but besides that I generally find Istaria's crafting system the best I have ever encountered. It generally makes sense what you harvest to make what you make and the customization on your creations is very nice. I also like the fact that everything is player made. I know that is rough on the New Folks but... It just is more satisfying in the end and helps take care of the question "If I am saving the world why does the Blacksmith CHARGE me for my gear? Shouldn't he GIVE me stuff so that he does not get KILLED?" which was always fun to wonder about in other games.
I am also forever annoyed at only being able to apply 2 to 1 in Construction... I mean honestly... Where does that other Brick go? You mean to tell me that despite me being fully Optimal in my skill at Sandstone Block Laying as a Mason I STILL break or screw up every other Block? I mean wow... Talk about lack of skill when the best you can ever manage is to be 50% accurate in your trade. I do not think most employers would accept someone who can only do their job half the time.
The attunement thing was also a big pain in my tail. I gather the idea is to try to rail road players down a specific path but getting to Parsinia and Sslanis are both death traps thanks to the Lt.'s on the Road and the fact that in Istaria Roads are always deadly which goes against every instinct you have as a Gamer. Yet you NEED to get to Sslanis in order to get Tier I Techs and to become some of the classes for Bipeds which is a big problem. You also often NEED to get to Bristugo and such in order to interact with other players (who you depend on for Gear many times) because that is where they will want to be. Running all over the world HOPING that you LAG enough that monsters do not spawn and kill you is unique to Istaria in my experience (never heard of Lag being a good thing before) but not a good thing.
The last thing that frustrated me to no end were the Magic Spot quests. I understand that the NPC's can be vague in their descriptions and the open ended model of RPG's. I LOVE Elder Scrolls... buuuut... When an NPC tells me to go somewhere vaguely and then the quest expects me to stand on a VERY specific tiny little place that I may NOT go to on my own... It is VERY frustrating trying to guess where I am supposed to stand. Some times it is along the road which is stupid because if you learned anything by then it is "DO NOT RUN ON ROADS STUPID!" because you get ambushed and slaughtered on the Roads.
Other times it is just in a place you would NEVER naturally go. I remember one in New Tristmus that wanted me to stand somewhere around where the Maggots were to go get Sand Pygmies. I already stumbled into the Sand Pygmies but could I go kill them? Noooo... I had to go stand in the magic spot but the directions for where it was were vague and I had already learned to avoid the Maggot Swarms so going near them when I knew a MUCH SAFER route seemed crazy.
The example of a Magic Spot done RIGHT is when you are told to climb the ancient pyramid as part of the First Hunt quest in Sslanis. That gives you a clear land mark that you can visually SEE and recognize to go stand on. Unlike the Shoulder Parrot quest which to date I have never completed due to its reliance on many Magic Spots that I could never find more than 2 of on accident.
That is it for my experience as a New Player and be warned that I am pretty sharp, very willing to ask others for knowledge without any hesitation, and a good strategist so if it frustrated ME it probably Broke the Game for other people and I was probably not bothered by a LOT of things most people were.