Why not just have more dedicated electronic warfare ships via hullmods/shipsystems that do this sort of stuff?
Because making decisions during combat instead of before is more interesting, at least to me. EW is already implemented as a passive hands-off mechanic, these ideas are about making it more active.
I agree with the sentiment, because EW should be less passive, and there should be more tactical decisions during combat. but is giving every ship the new capabilities interesting? It still feels too unreal: you click a button and a bunch of stats change. Like really, how can it make every other ship go so much faster?? handwave!
Also it doesn't look interesting. When an enemy is doing this against me, how do I know which ship is mainframe? Another tiny UI indicator like the peak performance timer I never notice? Wouldn't it be a lot more immediate and fun to see an enemy AWACS ship with a honking big radar dish and be like "AH HA! That ship! Get him!" to your fighters?
The emphasis in starsector is big on pre-engagement planning and less on micromanaging during battle, so that is a basis for dedicated EW ships. But I also want EW I can really see and feel being used for and against me; not just the words "+3% speed increase" in the sidebar.Dedicated EW ships with shipsystems/hullmods that have a more visible, visceral, offensive effect in combat will help EW seem less hands off.
Then desired tactical depth could come from where you place these dedicated ships (just beyond main action, hidden in a corner etc) and whether you choose to engage/counter/ignore enemy EW ships.
And finally I think the emphasis should be on buffs and stat changes that actually make sense, are actaully credible, and really fun-- like sensor range, missile guidance, turret telemetry, disabling enemy systems, sabotage, hacking stuff, etc etc. Not these "ehh, if you say so" buffs like % speed and weapon range increases. I mean really the ship has its own engines, a torpedo has its own propellant, and that's the end of the story. And besides, those kind of buffs aren't even that interesting or fun.
We should all reread our Iain M Banks ship combat scenes to get some ideas.