Instead of having general sensors where units are either detected or not, things would be made a little interesting by giving each sensor (radar, sonar) a numerical strength value. Units would have signature radii based on their size, other misc. factors, etc. Then stealth, jamming, and spoofing (where its radar signature is offset from the unit's actual position) of various strengths. A unit's ability target a unit would be based on the sensor strength of the sensor picking the unit up minus any counter intelligence field or capability on the target multiplied by the unit's signature radius. If a unit is inside of a stealth field which has a sensor strength greater than the strength of the radar field it is inside of the radar is defeated, and vice versa. In this way it make staking sensors and counter sensors useful as two radars would be able to pick up stealth units that would not be detected by a lone radar. Etc., etc.
Or they could add Mech-lawyers to sue people for having "invasive" radars/sonars/scanning and then they'd siphon off the opponent's resources for a time. On a serious note I feel that when it came to the possible massive scale of the game, it might just cause headaches in large gameplay. Maybe for a mod, not really for the main. But it's not my cup of tea anyways.
Information warfare is really fun. Would like different levels of radars (strengths and areal) and anti radar structures +1
This is way too much CPU processing for a system that collapses to a single anything scout. Planets are not so obscenely big that they're impossible to cover in units. If you are uncertain about an area, scout it!
No. This would make lower tier radars and such absolutely useless. This would make gathering information much too ambigue, redundant, and a tireful chore. Especially on the scale of this game.