There are some save scums mentioned, I'm going to assume there were some more that did not get mentioned. (?)
I wrote about all the times I had to restart do to the AI legitimately getting me. I did have to restart quite a few time to prevent the cloaker blink from ruining a run on the HWs, but those shouldn't be considered for balancing/cheesiness.
As for RNG-mugging, I keep generating new seeds until I have a fleetship I like or a good map position. I usually reject 2-3 before settling.
As for complete visibility, I find scouting tedious and easy (especially on lattice or spokes, my two favorite maps) which are the perfect criteria to disable it.
I think superweapons hard 4, in general and on diff 10 in particular, are too nice to the player.
I don't have a good cheese definition: I'll know it when I see it. I didn't use any cheese by my own vague and probably biased idea this game.