Yes; they'll play with the term like we're playing with “peace ops”. You're absolutely right that it would be a way to sneak it through, perhaps, but then you'd have to find nations willing to contribute.
I've always been sort of critical of a standing UN army, a rapid-reaction army. It would never, ever work. Why? First of all, the Security Council would never let the Secretary-General have his or her own army. Secondly, they'd only be rapid once. They'd go into the mission there and there'd be nobody to replace them, so they'd hang in there.
It sounds good on paper, but it won't work.