It'd be nice to have really detailed morgues like DCSS has.
- (Non-idle) playtime
- Turn count? (probably not relevant for Demon)
- Cycle number?
- Essence tracking (display stats as base_stat + essence_bonus)
- Ability use count for the player character (including deleted abilities; DCSS morgues put action counts in a table against XP level which would be interesting to see)
- Floor that demons were acquired, and maybe a flag that tells if they were naturally modified or player modified
- Floor or XP level that PC abilities were acquired
- Kill counts for player and allied demons?
- Counts showing which enemy demons were killed?
And other stuff I can't think of!