Getting a bit off topic, but heres my current ugh list:
MLRS--They lost their niche when the circle was reversed, cruisers just do their job better(more damage, range and hps, same speed and energy, slightly lower shipcap)--perhaps a speed increase or make them a counter to different units?
Edit: Woops, just did the math, the MLRS has the edge in dps, but with 3k less range, I still feel they are outclassed.
Edit2: Looking at the multipliers, I see the MLRS does has decent multipliers against a number of units, mabee they arn't quite as bad as I thought, but they go back to losing dps wise against their main counter, fighters, since they have a 4x multiplier vs the 10x the cruisers have.
Teleport battle stations-- Again not too useful on the offense later on(not enough hps to deal with lightning turrets and stuff), not having a connected set of planets means they aren't too useful on defense.
Cutlasses and vampires, dunno just not a huge fan of melee units in general, they just don't scale well to larger battles imo(cutlasses hurt themself, which makes them not as efficient as units that can kill stuff from a range without damage, and vampires get focused down too quickly in large fights since their lifesteal can't keep up), virals at least can act as a meatshield by reproducing.
Autobombs-- Though the ai has been giving me a bit of troubles with them in my latest game(thats what I get for trying to take mk IV planets with mkII units
, I find them a bit too expensive for the damage they do, at least early on, haven't had a chance to play with them in the late game I don't think.
Teleport raider-- Not really sure what role these are supposed to take for the player. For the ai they are great raid units and for that reason I'm not that in favor of changes to them, but the ai likes its lightning turrets a bit too much, and its still more effective to do a transport raid even with the recent changes than a teleport raider raid(since your teleport raiders are not going to get more than 4 hops).
Snipers-- Again, these are more of a defensive unit since the ai loves to counter them on the offense by dropping counter sniper turrets asap and I can't justify spending that much knowledge on a defensive unit.