If they were easy to fix, they would've been fixed.
All you have mentioned is the W-item bugaroony, which I imagine would require a lot of work seeing as how I doubt any of us have the proper tools to edit FF7's code.
I mean, editing .bin files and lgp files are easy, but only a select few know how to go above and beyond. I don't think anyone blames them for not taking on the responsibility of 'Squeenix patch development crew' because it's a big job that, as I said, isn't worth it.