I already said 100 times already but I will repeat myself for the 101 time:
Cowards doesn’t need any nerf or rework but simply no change but more competitors.
What I mean with “competitors”?
Now I will explain:
When new enemies get be added they “pollute” the wave rng/enemy queue, making them rarer to encounter.
Laserguns have a 50% chance to replace gatlings, making that breed actually rarer.
Right now cowards, the two variants of ufos, toxic, military and chicken in tin cans share the same positions in mission rng but own different weight.
Weight is a term that was used by IA in similar contexts, dumbed down explanation:
Harder features have different chances to appear than easier ones, according to mission type and difficulty
I think/understood
Since (I may be wrong but experience actually seems to confirm it) cowards are coded to weight more than tin, toxics and military, they appear way more frequently than all the other strong non-miniboss breeds.
Tldr: Cowards don’t need nerf but more competitors
(I would say asap but there are more important things the game needs first)