Even the most Diehard Novax fan will probably admit that they rarely use the thing. It has absolutely poor dps and what it does have is fired in sporadic short bursts. It's dps is the same as a handful of t1 tanks, and while it's true that it will live until it's control center is destroyed, it takes an extremely long time to repay it's cost in terms of what it can destroy, even if you attack a vulnerable, unshielded base (which won't be when they scout you).
The intel side of the Novax is crap as well. It's way better to just ask the local Harb spammer for a t3 engineer so you can build an eye of rhianne, which if you include the pgens needed to run it, comes to be less than a third of a novax's mass cost and comes with the benefit of your opponents not knowing where you are scouting them. Another option is to simply buy a hundred scout planes. Ironically the Novax can actually justify it's cost if you drag out the game long enough, something the satelite seems to lean towards.
I've heard that the Uef space program is really powerful when you get multiple of them, but so is EVERY OTHER EXPERIMENTAL. I've heard that it combines really well with a t3 artillery, but in practice it just sets you behind and your opponent destroys your half built arty, or the novax was built after and is just used to slowly torture someone to death.
But I can see that buffing the Novax won't be easy either, since it's not fun to have an op satelite that you can't fight back against. With a massive dps buff it will ruin the game for both opponents because your opponent sits under the laser for 10 minutes before ragequiting and you wait for it to end because you confined yourself to turtling. There is no way to acceptably balance it as a combat unit because your opponent can't fight back.
In it's current state, Novax does not encourage good gameplay from either side. The only way to use it is when you are already winning and want to drag out the game, and it forces you to turtle in order to stay alive, while forcing the opponent to turtle by building lots of shields while they work on their exps, slowing down the game (that is, slowing it down assuming you don't immediately die from lack of 28000 mass in troops).
That's why I think we should stress the intel aspect of the novax, turning it into a low cost experimental used to scout. I think 13500 mass and 240000 energy (about 70 scout planes worth of mass), but it's open for debate. As for it's laser, I think it should be reduced in damage/duration so that the beam does around 200 damage total, but with slightly increased aoe to encourage attacking due to a production lead, because you can still kill lots of your opponents buildpower if the engineers are grouped together.
Edit: Other ideas suggested (still possibly viable, just not focusing on them atm)
Improving omni radar
Massively improving scouting capabilities at the cost of speed
High alpha strike/area of effect at the cost of fire rate
Low damage but with high fire rate/area of effect
Jamming fields
Ion pulse (emp weapon)
T1 drop pods
Mobile smd