RTF is a global modification that replaces all towns in the game.

I actually like it this way (if we remove minor flaws like the dagger hanging in the air on the belt).
It's better to stick to the idea:
Gnolls - low-level, agile melee units.
Lizards - archers/warriors.
Gremlin ears would look good on gnolls; I need to try it. And it wouldn't hurt to give them a slightly larger dagger...
The original assassins had such a small dagger because their main weapon was a crossbow. For gnolls, the dagger is the main weapon, but right now it looks like a toothpick.