Google supports Eclipse and have built several tools to enhance it (Source Android). Why would they undo all of it. There are more interesting stuff to do even for a big company like google.

My only problem with eclipse is that it's a bit slow, but I can always buy a powerful machine and nullify that.

Perhaps you need to explore eclipse more. There are several editor options, I use emacs and long time back I built a shared LAN editor plugin. I also customize the shortcuts/workspace a lot.