Suggestion - I don’t have enough cash to really test it fully but the max speed seems to be set by ship type rather than engine. I swapped ship and its max speed was 1.1, I took out a loan and purchased a “thrust: v good” engine (after my drunken selling experience last night) and my max speed is still 1.1 The starting ship max speed is 1.2. Wasted heaps of money changing ship and engine and was soooooo not worth it.
I’m guessing there is some balancing things to be done yet before release.
You probably wont have time, but the ability to transfer modules from old ship to a new ship would be good so you don’t have to rebuy modules at a loss or could just improve trade-in rate a bit.