Spoiler
I like the Shift toggle. Game was always played at accelerated time, and I did not need to hold Shift constantly like in classic Doom. Took a few days to overcome muscle memory.
This. So much, this.
I have been experimenting with the speed of Burn lately. It takes away most of the boring grind of Travel. I'm starting to feel, pretty strongly, that travel between Systems should be via some sort of "jump" mechanic, or something; I'm really starting to dislike travelling through Hyperspace, after you know, years of playtesting it. Speeding up time accomplishes something similar, but it keeps the core structure of Vanilla's mechanics intact. I'm just getting to the point where I just alter them to fix my boredom crises, lol.
On combat speeds: honestly, there are fixes; I'm still experimenting with my circular-arena concept here, where leaving the arena means you lose CR. The game still has major problems with battles dragging on well after it's obvious we've won.
I don't think that "hugging the wall" should be a thing, but I totally see why you went there.
I think that Battle Size continues to be a legal way to cheat, honestly. I think that if we're not having performance issues, 500 should be the standard, so that the AI can swarm. I'm not in a fair position to judge that right now; I'm doing <various things> that have basically resulted in 500 Battle Size always running at 50-60FPS, on a non-monster rig.
Apogee is definitely the best start. I don't understand the Freelancer start and I don't understand why we get perma-mod ships we cannot Restore. I always do the Tutorial, because you're 100% guaranteed to get that Venture if you save-scum.