what's the point if you can't houserule to the heavens
it seems really weird to me that so many people are reticent to house rule TTRPGs, devs or otherwise. comparatively, it's trivial. do you and the other players think a rule stinks? talk about changing it and then write down what you think will work. play the game. if it still has problems, continue in this fashion.
i wound up listening to this strange discussion about problems with a spell in a game people were running/playing in. no one in the group liked how it worked and they were all complaining about it. guys, just... change it. it took about five minutes of conversation to decide how it would be better and it was done. no one had a problem with it after that, but it took literally weeks of complaining for them to arrive at the decision to do something about it.