Currently in 1v1 it feels as though Kodachis and Ogres are more or less the only buildable units for the tank factory, in my games. Kodachis apply insane early pressure and snowball extremely easily thanks to their regen ability. Most factories seem to need riots in order to defeat them in a sane way, which slows you down and makes it hard to expand as quickly as the tank player. And it seems like it takes a bit more skill to fight them than to use them. Some notable exceptions do exist. Ogres meanwhile can deal with many of the things that shut Kodachis down and absorb damage a bit better.
In turn, Minotaurs are very expensive and do less for you most of the time than a factory switch will, especially something like airplane factory for Thunderbird. And since the nerf to repairing I think Minotaurs are downright inefficient. Emissaries are both expensive and unwieldy now that they can no longer move and fire, as well as having extremely slow turret tracking so shooting and scooting is prohibitively slow.
Blitz feels usable but is more or less a slightly tougher Kodachi, and you need a critical mass to make them effective. I do get decent use out of these still but the cost is a little prohibitive. I wonder if it might be better to redesign Blitz and lean them more into their assault role, perhaps at 1500-1800 hp? 1250 leaves them pretty vulnerable to riots and Stardusts still, at that price point.
I won't really talk about Cyclops or Tremor because those do definitely have their uses and mostly don't feature in my games, though Cyclops does seem a little expensive compared to the other demi-striders and feels less generally useful.
Somewhat related, is Scorcher just ineffective right now? It doesn't feel good to use at all, especially the damage falloff ratio at range feels really punishing.