what might be interesting, is to be able to go from one mission to the next while in spaceflight, I checked out old wc3/4 missions and this was how they did the jump point missions back then, when you jumped, basically another mission was called immediately with a small cutscene inbetween. Just another suggestion, but would then allow you to call a different mission with a different sector - helps really pass off the effect you've jumped into another sys - then you just carry on as normal (i experiment with this in secret ops once, was a bit of a pain, but got something close to it)