I've noticed an increase since the site design, too. 9 downloads in the last 2 days...prior to that, nothing for a couple of months.
Proof that they are buying yours now and not mine.

Best selling image there for me, has 42 views and two sales, in two years. I think it's another case of time to pull the plug. It's not the right place for them to waste space hosting my images nor me to be uploading. Minimum sales are 50c and most have been $1, nice fair commissions.
I do like the new look of the site and I can find things easier. It may be the same layout with easier graphics, plus it's clean and functional.
In case that's a long answer... No Increase for me.