TLDR: Make triple-clicking a champion minion starship select all other champion minion starships with the same hull type.
When playing with a Champion, whether normally or with alt-progress, the player accumulates 15 different types of splinter-faction starships - 3 from each of the 5 factions. For each faction, there's one type with a light hull and ~10,000 hit points, another with a medium hull and ~20,000 hp, and another with a heavy hull and ~100,000 hp. Very often, I'll want to grab just the heavies to attack a Missile Guard Post, or just the lights to keep them away from an MLRS Guard Post, or whatever. But given the 15 different types, sorting through them becomes tiresome.
It would be vastly easier if triple-clicking one of these starships immediately selected all the others with the same hull type, in the same way that triple-clicking a Bomber selects Bombers of all marks. Currently, triple-clicking one of these starships selects all the ships from that splinter faction. I can see how that makes sense thematically, but I can't see any practical reason you'd ever want to do that in-game.