Blaf

Not sure how efficient it is, but light reflection seems to be achievable in Unity 5...

Hinges and hydraulics.

This, and stabilisation autopilot capable of control thrust separately for each engine, as well with maintaining altitude.

Imho asteroids in KSP are just a primitive with displacement map, thus just some randomized map generator might be needed...

For me it was the most anticipated feature in 1.1, so im a bit sad it wont make it. I suppose devs had good reasons for postponing it though...

It depends what you expect as a result Please check following link: http://www.marmoset.co/toolbag/learn/pbr-conversion It's quite descriptive and easy to understand explanation of map conversion to PBR...

Yes, it definitely is. While checking tips on internet might help you get things up quicker, you can realize how to do these things using common sense. It's still a game, not a rocket science simulator

Wooden trebuchet capable of launching cargo to orbit.

That might be worth GIFing

How bout Terrain Scatters (WIP) no longer being WIP?

According to my (therefore very subjective) preference, i would say some form of life support and "robotics" features are mandatory for 1.0, since the game feels somewhat incomplete without them. On the other hand some small bugs here and there can be expected on the release, but ofc no game-breakers should occure.

Other: Robotics

IMHO this is not the problem of aerodynamics model, but more of a UI problem of not providing player all the necessary information, resulting in player not being aware of what is wrong with his design.

And suddenly there comes silence.