There's only going to be a tiny handful of units that can use stealth anyway. Though, the detector-cloaking relationship helps balance out the factions and ensure the use of some units. For example, if you don't build an AA Launcher, your base can be spied on by the stealth bomber. Sure, you can take out air units fair enough without it, but you won't be able to detect a stealth bomber in stealth mode. All air units will certainly be detected by the AA launcher for UNATF and an undecided alternative for the cult (both need their own way to detect units, as it's important that units are detectable by at least something). Land units have not been decided yet, partially because of the cloaking restriction, though most likely a sniper style unit will have a cloaking ability. The Cult is largely undecided still (and you still are welcome to give ideas and opinions while I am busy with the Glest Guide, which I want to finish before I start version 4 (that is, the cult) of Military).