Since wanda came out we know for a fact that we will not be getting any new characters until near end of 2022 but just because i like the idea i want to post it before i forget it
a character that doesnt feel pain would be really interesting and it would need you to play way more cautiously for example
you would not see overheating or freezing warnings the hp will just start dropping out of nowhere and you have to figure out whats wrong
this also means you wont feel starvation and you would not get stunlocked and die in misery because you forgot your lantern in the ruins during nightmare phase next to the depth worms and you ran out of light but whatever
not getting stunned after taking hit could be insanely helpful but the times it would be helpful be extremely rare so it might as well not even matter
tl;dr it would be really fun if you didnt feel pain in the game