On the topic of ships, my character is still flying a converted Crimson Fleet Ghost that I originally captured a few hours into the game:
Nothing strictly cosmetic on the ship, though I did avoid some hardware placement and omissions that didn't make sense to me. For example, it lets me remove the tail landing gear when there is no way it should be balanced otherwise, and I didn't dangle any fuel tanks in front of the engine exhaust ports, even though the guys at the shipyard say that's kosher.
I ran into issues upgrading the Frontier early on, but the crappy little Ghost has really strong landing gear so has taken the upgrades in stride. It's got a 200+ damage particle beam alpha that it can repeat 1.5 times a second indefinitely, and I haven't found any six ships that can stand against it. On top of that it can still cross half of the game in one tank of fuel, while carrying 2k units of cargo, and has jammers that give it an 80%+ chance of evading contraband scans.
Probably going to swap out the turret on the top as it's caused me to reload the game a few times after accidentally destroying security ships while trying to engage hostiles.
It's pretty crowded inside, and some of the passengers make comments about cleaning their rooms, which doesn't make any sense as everyone has to bunk together on the floor of the landing bay.