What do you mean ''would be'' awful game design? We already have the Luddic Path lol.
LP ships are amazing because the Safety Override mod is free. Colossus Mk II for example is a monster of a ship.
By no means endgame ships but certainly early to lategame they are very strong and disposable.
"Immersion and realism" is far less important than good game design. (Categorically) Fast pirates would be awful game design.
1. How many slow ships do the Pirates have? 2 only. They don't love slow ships.
2. Immersion/realism matters and when done correctly doesn't impact good game design, they aren't mutually exclusive.
3. Pirates are fast, only their mega zombie fleets are slow because they include those 2 slow ships. So pirates must be "bad" according to you.
In short pirates early game are fast because they lack those ships. Your words don't match reality.
Path ships are SO powerhouses while pirates have more glass cannon ships (except the Venture).
100% this, they are crazy and even there most d mod covered trash has dangerous firepower. As they certainly should be.