The upgrade to the mithril fields and some of the other locations was nice.. you added motherlodes. Good change.
Unfortunately you also beefed up security to those locations so much that there's no chance anything less than a lvl 100 ancient would have a chance at being able to gather for any length of time with the respawns being that fast.
Granted, it would be one thing if the boulder golems were harvestable for as much as a rich node (which was supposedly implemented but was not) or the normal golems even had as much as a normal node on them.
But they aren't.
Not only that, but why does someone need to be a high level adventurer to harvest material in the first place? What if I just want to be a crafter first so I don't have to bother everyone for my gear/spells/etc as I level?
Making it so you have to be the same level as the tier you're on (or higher) complete negates the point of crafting for that character if I can't make items until 20 levels after I needed them. And as far as hiring an adventurer to help... it takes a lot more than just one to keep 3-5 golems off you that respawn every 30 seconds.
Let's consider either creating an unguarded section of each tier of material (which everyone will use.. who really WANTS to be attacked by mobs? Especially ones that can't be harvested for even as much as a normal node?) or adjust the guards to compensate for the fact that there is no more balance with the distance gathering removal (Enjoyed reading about that in the patch notes, btw).