To be brief
1. Basically a whole balance revamp and I'm not willing to get into it right now as I believe balance is mostly in correct place
2. Factor upgrade system is actually exists as easy mode mechanic, we plan to remove it from hard mode. Also see 1
3. See 1
4. See 1
5. See 1
6. I think current class display is alright, what you can't see you can eventually learn about anyway.
7. We'll consider adding automatic quest submission but I don't really see why make fewer quests
8. There's an upgrade which makes tools bit more versatile, otherwise there's no plans to add more tool slots.