Hey there - keepin' it concise with a list response:
- There'll be encounter respawning, yep.
- Enchantress will be the only story mode class until you unlock the others.
- You'll find there's a different way at present to break the game with the majority of the classes - most of the skills are placeholders and the battle mechanics aren't fully fleshed out.
- Yep, there'll be more skills, and different level caps on skills!
Glad you like it so far. :D