I don't get your expense argument - a T2 shield costs 500-700 mass; you could build 10 of them and it's still a fraction of the novax cost.
It's not just an expense argument. As the Novax moves, if means you need to move around engineers to counter it. Engineers are slower. Note more importantly to your point; a single Novax will ;
- over power and kill a Cybran T2-d1 in 1 shot, (4) Shots if Sera T2 - unassisted
- over power and kill a Cybran T3 in (4) shots, or (6) if Sera T3 - unassisted
- most mex's get surrounded by fabs, so it doesnt need to kill the mex, the fabs do that FOR the SAT
- Novax's do extra damage to shields, so as soon as the shield drops- ITS DEAD
So if you succeeded in shielding your base for 1 sat, you have to get more shields / engineer assist even after shielding. And so you make strongholds where shielding is better. But that only works up to (3) sats. At (4+) sats (around 1000 dps), you're fucked.
In the meantime, you basically get ripped apart on the edges. SATs are practically like the stereotypical American-Sitcom In-Laws. There's no defense, no escape, and they chip, and chip and chirp away at you unstoppably....
Which underlines the point of this thread- balance aside- its a very un-fun unit in its current state.
But, for instance if Sat players had to micro them around SMDs; that would be an elegant counter; already in game.