The PoD reprints are closer to trade paperback size though, irritatingly, the actual printing is still from the MMPB template (so you've got as much margin as content on the page, with the text just swimming in white space).
Yep. As far as I know, "Star Trek" has not used the taller-but-not-wider trade format, which is why I assumed the OP meant the PoD Trek.