I like my 7800 and I would really like to continue to be able to replace parts easily.

If I need someone with an engineering degree to fix my bike, I would be pissed. This electronic stuff is great for advertising, but it sucks for amateur racing if that's all there's going to be. Stuff breaks all the time. I'd hate to have to get a new frame because I broke my RD in a crash and the servos stuck somewhere inside the frame, etc. I know that's a terrible example, but you get what I mean.