So here it is shorn down to the basic shell.
I was originally going to go with it being the front half of a 1/24th fighter or the CM of a 1/72 probe ship.
But the more i look at it the more i think its quite cute as a little self-contained submarine. That'd mean putting the rotor back and maybe the top fin.
Got to fill up the holes left by me removing the chunky details.
And get rid of that really naff scuba mask front.
And make the canopy opaque somehow - don't fancy building an interior.