[quote=@Mas Bagus]
1. How basic will our starting ability be? [/quote]
Say your character was someone akin to Aladdin or Robin Hood in their previous life:

The character sheet I’m workshopping would have you start off with [u]Legendary Thief[/u] and right from the get-go you’d be good at sneaking around and pulling pockets. Progression would then branch out from that as your character slowly remembers more about themselves, like if they were a master archer— or swordsman. 

[quote=@Mas Bagus] 2. Will it be something like a sandbox game? 
[/quote]

A curated sandbox where story beats will nudge you in specific directions.