Then don't say you're "a marketplace for Bootstrap themes & templates", but "jump" at your visitors with what makes you unique and/or better.
Btw: I really dig the smaller thumbnails, they make me feel I have a better overview over what's going on.
Edit: wait, that's just on the first page. Sigh. I don't really like large-ish thumbnails á la [0], especially in the retina age.