The Forerunner Wormhole thingy (does it have an official name?) obscures ships at the edge of the gravity well. Which for a UNSC player makes it impossible to correctly mirco your nukes and pretty much any fleet coordination.
One solution I can think of right off the bat would be to shrink the gravity well of wormholes so that the outer edge of the well is inside the Forerunner Wormhole structure.
Not sure how pressing of a concern this is, but it's something that could be looked into sometime in the future.
I noticed this while playing the tourny map that Norman made and a key chokepoint is the wormholes, but fighting in there is very difficult to manage when ships are camped on the edge of the gravity well.