Identify a Problem
Novax is a powerful and versatile exp, especially when en masse. Arguably somewhat overpowered, as reported by many players. It's both mobile laser beam and T4 scout that cannot be destroyed. It's mostly built as a laser beam station and gets insane Intel stats for free.
Novax has 60 radius omni and 200 radius radar. For comparison T3 scout has 28 omni and 96 radius. The actual difference is even more than this, since Novax have no inertia (no turnabouts like with T3 scouts) and cannot be killed. It allows him to choose any path regardless of AA & ASFs placement, which are a huge concern for T3 scouts. Consequently it not only has more than 2x radius than T3 scout, but also can utilize it more efficiently.
Having Novax usually removes the necessity to make T3 scouts at all, since Novax can see almost an entire base to choose targets on it's own.
Mass considerations
The above mentioned fact is not to be underestimated. It indirectly saves a lot of mass. T3 scout costs 200 mass, and usually you will send at least 5-10 of them through different direction to get a chance to see something. 200 x 10=2k every time you need scouting. It's also 2k x 0.7=1.4k mass less donated to the enemy since T3 scouts are doomed to land on enemy territory.
This is 3.4k mass per one scouting party, and there are multiple of them as long as game goes. Cumulative effect of these savings can easily go beyond half or even entire Novax cost.
Showcase the Problem
#22881789 3v3 ladder. The player in the bottom left corner has no t3 scouts (and never did), no t3 radar. However having Novax coming out of his base is enough to catch the enemy cloak commander, giving an easy kill.
If Novax didn't have omni, it would be a good lesson for noobies to build T3 scouts & radars, not only game enders.
Find a Solution
Novax satellite:
Omni removed
Radar radius: 200 -> 96 (same as T3 scout)
VIsion: 60 -> 45
Justify the solution
45 vision is still more than enough, 1.5x more than 32 fire range. Removed Omni wouldn't allow to spot cloak coms by luck (or intentionally). Reduced radar and vision would force Novax to rely on scouts built by players. Players will be more inclined to continue build T3 scouts to spot potential targets for Novax, not just using it as a two-in-one T3 arty and T3 radar.