Re: DRW match December 12th 2013!
Good example. If you're still working on fundamentals like he was, you certainly don't need additional complication or stressors.
Once you've got a handle on them though, I like that it gives you a reason to practice things other than slow fire from bipod/prone trying to get the last teenth of accuracy out of your rifle.
I think you could make a decent beginner/experienced differential just with different time allowances. That would still allow everyone to shoot together on the same COF.
Empirical results rule!