ChrisReid
Super Soaker Collector / Administrator
Actually, you might be onto something--if a cloaking device were a limited enough thing then you could include dialog from frustrated enemies that triggers when you engage it. ("Oh shit, where'd he go? He's off my screens!" and so on--it'd just become annoying/unfeasible the more places in the game it lets you cloak...)
Splinter Cell does this. It's really really cool in the first mission, and then it becomes that every time you slip into the shadows, the AI players start screaming about where you went and they never shut up!