Just a thought, I think it would be a nice feature to be able to sort through tilesets and art for tilesets by the tile size.
This would definitely be good. To some extent this will probably be covered by art collections when the feature is finished (presumably one could make a collection of 16x16 tiles, 32x32 tiles, etc). Currently, most of them will turn up in a search for "16" or "32" but it's hard to know which ones won't because... well, they won't.