Back on track? this thread was created for the "next-gen consoles" a term only used so far for the 360, ps3 and wii.
Plus the topic creator obviously had these consoles in mind, so even though its "current-gen" now, the subject of the thread is still 360, ps3 and wii.
So random speculation about what the successors to these consoles would be like, would actually be derailing the topic.

But if you really want an answer, I mean wth, do you think technology has reached a limit? It would simply be more advancements in the control interfaces and ofcourse upgraded gfx once again.

Everything has pretty much been done already, and can only be brought back bigger and better, cept for ofcourse control interface, which still has plenty of room for inovation.