In the manga, ichigo goes back in time after he fights Aizen, he goes back to being normal, not emo ichigo. Even his hair went back in. In that case, should he not have his powers back? IF time went back and he could actually turn pull his hair back into his head, to that extent, should he not have his powers back as well?

And also does anybody know why ichigo collapsed? I think it was something to do with the spirit king guy. He is behind this, I can tell, Ichigo might have just lost his soul while it was carried to him, or maybe the king guy thinks ichigo knows to much. Aizen was after the king guy, and seeing from his last statment "losers think of how the world is, you should think about how the world should be. I think his motivation for the things he did were no so bad-ish...

he collapsed because he used the 4th getsuga technique and did not go back in time plus if nobody could sense his power after he gained that technique how does anybody know if he really did lose them it sounds like a setup to me since we all know that aizen will escape and probably had planned on being captured anyway and it also looks like urahara has his own plans also

Same thought here on Aizen not being entirely "bad". Speaking of all this king stuff we were so close to maybe seeing what that higher realm was like then turn new race introduction?