If I was in your shoes I would run the test with a cautionary note attached to it. If you can overcome the problem of agent phones getting logged out after every ACD call, you should have half your problems solved. The other half as Oz said will be the break timers: what if theoretically all agents complete an ACD call almost simultaneously, say within a 30 second window: that would mean that for another 90 seconds no one can take any calls.
Ultimately, the way I see it, a call center only perfomes as well as it's people work, no matter how much technology you throw at it. If you can't manage your people (and I don't mean YOU you.. just in general), then go and automate the whole process with an intellegent IVR solution, such as Intelleca's Voice Genie. It does not require Not Ready time, and callers never know the difference..
