A nice Frigate sized ship for Starships & Spacemen 2E. Visually it fits in well with the "pseudo-Trek" aesthetic of S&S, with the obligatory saucer hull + nacelles configuration. It's noticeably more squat looking though than most Not-Trek ships.
The deck plans supplied as PNGs are black & white, bare wall outlines, which was a little disappointing, but the main PDFcontained full-colour deckplans populated with furniture, which are easily extracted. The plan style is colourful and functional, (think classic Star Frontiers deck plans) rather than photo-realistic. This ship was clearly built with Luminious's Starship Construction Manual in mind, as it describes systems from that and lists the crew complement for the "cinematic" (i.e. realistic) crew level (which in the SCM is 10x the traditional S&S crew), and the floorplans reflect this number. There are three variants listed, which if the in-service dates translated to Trek-eras would roughly equate to one TOS-era, one movie-era refit and one late-movie-era refit. The ship stat block lists the baseline S&S ship stats, description of non-standard equipment (like the Mk-III's extensive automation) is left to the fluff text description. I can see why LD did this (to make it accessible to people who don't have the SCM) but it would have been nice to see the full SCM design spelled out (though it's easy enough to reverse-engineer).
Major gripes? I really don't like the layout of the command deck, which wastes an awful lot of space in the interest of symmetry. The bulk of the space on this deck is taken up by two corridors running around the outside of the saucer from the turbolift at the back to the bridge at the front. The only access to the bridge itself being through one of two very tiny conference rooms that flank it on either side. I'd want to modify this to make better use of space, make the bridge more defensible (only one entrance) and make the conference room a usable size, big enough at least for a table that all the command crew could sit around.
As for how usable this is outside of the not-Trek S&S2E game? Well the nacelles that give the ship the essential "Trek-ness" aren't on the deckplans, so this works fine as a generic sci-fi saucer-shaped ship. It would work fine as a small scout-ship for Star Trek Adventures (although you'll need to come up with your own ship stats), just don't expect the level of art you get in deckplan products from the likes of 0-hr or Heroic Maps.