Concentration needs adjustment, I agree. But surfaces are kind of a core thing to Larian and I doubt they will go away. I also doubt they will change mobility bonus actions because they are necessary to deal with the surfaces. While homebrews may be mostly shite, I expect that when all is said and done, Larian's will not be. But people can disagree.
Personally, I find the effects of acid on the ground and the ability to carry around barrels silly.
