Me and my friend were discussing a similar game type, and the problem we came up with was that it wouldn't be very balanced. In halo the flood can make progress because of the sword lunge, and the dive roll. They need that one hit kill to be match. Whereas the guardians would simply team up, and whip out there shotguns. I think if you made it so that the taken had special swords, and there was no radar. It would make it playable. But then it goes back to the whole "no specific load out thing" so that you can use the weapons you spent all this time getting. Just some things to think about.