I gave a lot of feedback on the new homepage immediately after it was launched. Now that we've had it for a while, I want to add one more thing.
A big problem that I have with the new homepage is how slowly it scrolls. It seems to lock up at certain points, and so I have to wait longer than seems reasonable just to navigate around on the page. I know that could be browser-related, but I don't have the same sort of problem (using the same browser) on other pages here.
Also, when I want to post comments in a forum (from the homepage), it is more difficult - i.e., more difficult than posting from within the forum thread. The comment box collapses from time to time. I think this is related to something I mentioned in the beginning, but may not be identical to that problem.
I'm not really all that thrilled with the look of it, honestly (it's just an esthetic preference), but I admit I have been spending more time since it launched actually looking at the blurbs of new Hubs, at questions and answers, at forum comments, etc. I can see it as a positive there. I like getting a little sample of a Hub, rather than just the title.