So I've drafted Theros four times now. The last three drafts I've been lucky enough to have multiples of powerful cards, specifically four of each.
Draft #2: Four Grey Merchants.
This was still early enough in the format where people hadn't realized how nuts this card is. Now pretty much everyone knows. I could have had five, but I took Celestial Archon instead. Seemed good at the time, but in hindsight I think a 5th Merchant would have been better. This deck went 4-1, losing the first round to a ballistic heroic start both games. If I had any time at all to set up, this deck basically could not lose. I learned to value the 1/1 deathtouch in black and also Returned Phalanx, early blockers that buy me time to get into midgame, where I basically cannot lose. Sadly, this was probably the best deck I'll ever draft in the format, and it got me 6th place and 3 packs.
Draft #3: Four Deathbellow Raiders.
I also had two Kragma Warcallers and 10 minotaurs total. That's a lot of beef. The deck smashed pretty hard and went undefeated.
Draft #4: Four Horizon Chimeras.
If you're the only UG drafter at the table, life is good. This card combined with lots of card draw makes life very difficult for your opponent. This deck went undefeated as well.
The Merchants and Raiders are common, but the Chimeras are uncommon. It's much more difficult to score multiples of uncommons, though if they're multicolor and that combination is open, it's much easier. I could see getting four Kragma Warcallers, since minotaurs seem to be a bit underdrafted. Battlewise Hoplite is another possibility.
My dream draft tonight is Wx heroic with four of these guys. But I've been pretty lucky so far and that's pretty unlikely to happen.
The format is better than I thought it would be. It can be swingy, but not nearly as bad as AVR. The removal is pretty bad, but cheap deathtouch and bounce keep things reasonably balanced.