Didn't see one already, and I have some features I'd love to see so I figured I could kill two stones with one bird
1) The ability to see how glow-points and thrusters will actually look in PCS2, which makes it easier to glow-point and set thrusters, as there's a lot of going in-game to check. This should, ideally, be toggleable at any time, as it's easier to get positioning right with the little ball in PCS2 now, and it's better to determine what size it needs to be if its the actual glow-point, as the ball we have now is terrible for knowing how big the glow-point will actually be.
2) Normal mapping in PCS 2. Nuff said. Not really a big deal but it'd be nice to have.
3) Slightly more transparent bubbles, including the thruster, primary, secondary, and glow-point bubbles (or what I called balls earlier). This is for both a selected and non-selected bubble, which means its also easier to get placement right because you'd be able to see the surface it's placed on easier.