I also notice there does not appear to be a button that lets you add or remove all materials, which means I have to go through and manually deselect all of the materials down to the four or so my models are cleared to run on. Again, more time wasted that I didn't need to do priorly. And if there is such an option, it isn't at all obvious, which is just as bad. (As with the keywords, if you can cut and paste, to get multiple words, they should be something so that it is obvious, otherwise how on earth will anybody - especially some one new know about it? )
And the more I look at it, the more I loathe the description box xhanges; being in a grotty, easily missable grey text, the "more" button is not especially visible (if you were going for a youtube-style - though why the heck you should even consider wanting to do, because this is commericial webshop, not a social networking/video site, and shuld be taking it's cue accordingly - you failed even to make it to youtube's dubious standards.) Editing it is now much harder, since the editing box doesn't seem to expand, so if you have more than about five lines, you can't see it all at once. You also appear to have removed the formatting options as well. The description should not have less prominance than the comments box, as in a lot of cases, it's very important.
I also second the motion the model title should be at the top, not underneath the picture.