This is about stuff you think would be cool if it was in the game. It's not about complaining, ect. Just sharing your neat, impossible concepts. I am sure there are things people wished were in.
I'll start.
I wish there was a viable way to play as a mutant. Once you mutate the core gameplay changes as the ordinary inhabitants of Underrail no longer accept you and the player has to search for ways to adapt. For example, Wyatt can start trading with you - offering scavenged Junkyard stuff. The mutie community at the island refuge can become a new players hub and the thing in the cursed hospital can become a psionic mentor to the PC(the price is killing it, so you will have only a few choices before you do it.)
The player will lose, however, access to most of the vendours in the game; maybe they will still accept him/her at SGS as Tanner wouldn't throw away a willing puppet, but perhaps some of the other inhabitants will have something to say leading to interesting situations. Oculus seems like a place that will always welcome the PC as they have an affected of their own already.
PC could change to different types of mutants - for example if they had a dominant Str value they would gain natural abilities based on that. There could be psionic, smart, sneaky, ect., mutants.
Even though we're mostly used to mutants being mostly savage, lore-wise we've seen several cases of exceptional mutations. PC could be one of those.