Genocide is a pretty fun but very small map. A Supple drop happens every round. It’s pretty easy to beat, and is good for novice players that don’t know that saving ammunition is crucial and waste most in the first 2 rounds, since ammunition is plentiful with supply drops coming in every end of the round.
The other map being Frostbite. incredibly suspenseful, and incredibly tedious when you don’t know where everythnig is. It’s dark, firearms scattered, and objectives. The floor is snow and slippery, the zombies and your movements are different than what your used to due to the sliding.
Both of these maps i would vote for keeping.