[Crazy Jetty]

On top of that, I believe this and the Playmates BoP are roughtly in scale with the Micromachine Runabout.
As like you said the BoP have been shown to be in multiple sizes (unfortunate, as it's a brilliant smaller sized ship, ala III and IV, but comes off a bit silly when they jake it up to being equal to a galaxy class)

The (Hot Wheels?) Reliant that came out with the 2007 movie should be in scale with Art Assylum and Playmates D and E.
The same series BoP should be in scale with AA's NX Enterprise.

My problem is, aside from Galoob, no one's ever really given the Trek ships a really good go. Anytime anyone gets the lisence to make them, they do maybe a dozen and stop. And it's always the same ships. Original Enterprise (And now Reboot Enterprise), A, D, Klingon BoP, Romulan BoP, Klingon D-7. And maybe if we're lucky, expanded into the Defiant, NX, E, Romulan Warbird, Reliant, and B and/or Excelsior. I mean, not even Voyager often makes that "expanded" list.

With Micro Machines, we got soooo many really cool lesser ships, like the Nebula Class(My favorite), and the Oberth. Even out of scale, it was just so nice to have such a range.