You can vote those apps even without an N900, their faults are evident even in the testing page. The themes thing is weird: they all take about 450 KB of rootfs, which is under current limit for being a problem (actual limit is 500 KB). We have already promoted apps with similar behaviours, but themes seems to be different because they are so many. I've personally voted all the themes thumbs up, because they are all ok according to qa rules, but the problem exists.