I think the game really needs to test a few of the aspects with 1x skill gain before the game releases. A few problems that could be seen that aren't shown with Max level characters are thing like:
- Does AI hit too hard for new skill groups to out heal, damage etc.
- Are there any skill groups that are not scaling properly at low levels (basically is a sword for example bad from levels 1-50 and then make a big jump after that.
- Is everything moving at the correct speed or do some skills lag others.