Does/might the added crap throw off timings and functionalities of current 680x0, or is it cause its an unknown variable as to how a routine will actually run?
There's always the risk of something not working as it should. I mean, even if I do most of my development using WinUAE, and pretty much know it emulates everything pretty good, I still do a lot of checking on actual hardware just to make sure.
But my main gripe is maybe more with the perceived focus of this whole project, where added features seem to be more important than true compatibility (with the 68060).