One would have to assume that the mod files will be handled the same on both platforms if PC users can make mods the console users can install. I would assume this to include the format of the meshes and textures too, along with the BSA archives everything would be stored in. So there would only need to be one support structure, same as it is now. There will just be more people installing the mods, and thus more people to support.
As far as what is and isn't a bug, we've been over that ground so many times it kind of gets old to keep coming back to it. Bethesda considered exploits to be bugs. They fixed several. Then they stopped patching. So I feel pretty confident that the few we fixed after they stopped are justified in being in the patches. If we removed everything that one or more people objected to, we would literally have no patch left. Yes, there are people who object vehemently to us having fixed quest bugs that break them, arguing that Bethesda did it intentionally. There are people who seriously argue for us to stop fixing typos, or bad voice recordings, or even trees not properly placed in the ground.
Everything we've done has been documented in our changelogs. Most of it is pretty trivial stuff, the rest had some pretty good discussions over the years. Nothing was ever done "just because". We don't even engage in unwarranted content restoration like some projects do. That's where Cutting Room Floor came in and filled the gap. It's all there for anyone who cares to go down the list. And no, we don't bite either