I would recomend the following changes/additions be made to Spirit Isle.
1. Add miner and gatherer to the schools you can join and quest for there.
2. Add a series of quests that gives the player all the beginner tools, these are usually given away anways by older players and the experience will do the new players good.
3. Add a series of quests that will provide a basic set of equipment for each of the basic adventure schools (spells included in that). Let the quest do both 2h and 1h and shield for the appropriate schools.
4. Add monk, spiritist, and druid to the initial adventure quests...most new players don't even know these schools are there and since they are not actually prestige they would be better served as part of the spirit isle experience.
5. Add one quest to show what a technique is and how to impliment it. Make it an inferior technique to those found in the real world, but still useful (say and armor tech of health +1)
6. Add at least 1 fight with a agent of the WA.
7. Let the quests give money as well...this will let the new players be able to buy things from the older ones as soon as they get to NT.
8. Put in a pawnbroker and oddities collector.
9. Make part of the quest to NT be to see the vault keeper and connie.
Similar changes should be made to the dragon starter area.
The pourpose of these changes is to give players a better and more rounded experience while still on spirit isle. Then when they hit NT they will be far better prepared for the challenges ahead and will have more knowledge of the game and how it works.