The logistic ships space has room for more gimmicks, as right now there is a pretty clear progression from the cheapest combat freighters in early game, to Colossus spam in the middle game, to Colossus spam forever because all the Atlases in the sector got converted by pirates. But I don't understand this constant need to divide ships up along high/mid/low tech lines. Ships are already aethetically different, and different in terms of crew, fuel, speed, armor, and shields along tech lines. We don't need to introduce more differences. There can be some variety in each tech level.