Stealth is totally broken, invisibility with low backstab being preferred for assassin-like play
Stealth sucks
I can have 100 stealth and stealthy talent with 20+DEX and it is totally underpowered. With Backstab/Stealth at 100 and stealthy talent it is still 10% of what invis + 20 points in backstabbing give. Possible fixes:
1. Introduce sound/light physics to ADOM
CONS: Except being weeks of dev time to get it right (lighter armours giving less noise so stealth more equals invis, torches/crystals that give light are sadly not existing as in Brogue) not guaranteed to succeed.
2. Make maxed stealth+stealthy close to invisible
PROS: easy to implement, allows for new ways of tackling the game
3. Make invis spell/items somehow easier for assassin/thieves types to get
CONS: Not all of them know how to read/concentrate/cast, half a fix
4. Reimplement stealth mechanics (stealthy more like invis until first attack/take into account burden, types of armours, intrinsics...)
PROS: easier to implement, still a lot of work (CONS)