I only draft the "fair" green deck if I happen to pick up the "unfair" Upheaval in the first pack. Otherwise what's the point? You scoop against mass removal, blue/x with shackles, mono red without a combination of kitchen finks/primal command/obstinate baloth, so basically every colour except the mirror.
In theory, yeah. I thought so too before I tried it more.
...But I haven't really had any trouble with any of those archetypes. 12-0, won all four drafts. Depending on your list, you can beat mono red handily with stuff like Polukranos and random fatties, ignore wraths if you pick up the correct fat, out-advantage control if you pick up any planeswalkers (or just ramp too fast for them if you're a spell version of the deck), etc.
The midrangier pieces of the deck have been wheeling like crazy. I have yet to have any trouble grabbing all the pieces I need. Like, seriously -- Polukranos, Master of Wild Hunt, even Thragtusk. Nobody takes them for some screwed up reason, and they stall out aggro like crazy. Mana dorks have been lingering until the last couple cards of a pack.
This means it's been fine for me to take 'unfair' cards to build around early. Emrakul, Thran Dynamo, Channel, Survival of the Fittest, Kozilek, Ulamog, etc. They all fit insanely well in the 'fair' mono green list, and I'll usually end up with one or two of them.
Let's say you grab one of two of these bonkers cards. Now you can pick up the other G/x ramp insanity that's been going late -- Iona has been wheeling for me, as have Terastodon and Eureka(!). Same with the other mono-G staples, like Rofellos and Sylvan Library. Maybe it's just today and yesterday, but MTGO cubers seriously hate green for some screwed up reason.
But yeah.. mono-G can get very christmaslandy. I like it because it fits in so well with the scarier build-around-me cards, and it always seems to be open.