Le build de FanTasy est fait pour sniper, aucune chance que il devienne viable.
Cute build, but unfortunately it's "only" a sniper build that you can pull off one time since it thoroughly relies on the surprise effect. Stim wasn't complete before 14'45 while Zerg can max on lings/banes/mutas by 14' and completely destroy you; Life massively delayed his first batch of mutas because he was tricked by the "fake mech," but had he made them at the regular timing and used them to harass, he would have scouted the trickery much earlier and would either kill FanTaSy with a massive 200 2/2 timing or simply get 30+ mutas and win from there. This mech into bio has no future as a standard. The other side of the equation, bio into 3-4 fact Thors (e. g. Mvp vs Curious, Akilon Wastes, IEM Singapore), looks more promising.
http://www.teamliquid.net/forum/viewmessage.php?topic_id=444447#6
Et : Whilst it's true that Fantasy only got away with this build because life didn't see there were marines for 15 minutes (he did scout 3 fac and an armouy with his overseer it's a fair assumption to make), I do think that terrans are getting somewhere with these large bio/mech compositions. Zerg are staying on lair tech for much longer then before, not rushing hive, so it's much easier to spend more time creating the ideal composition (6-8 tanks, 3-6 thors, 20% hellbat 20% marauder 60% marines) which is extremely effective before zerg gets the big gas intensive brood/ultra/queen/festor army.
Generally you want to attack the zerg a few times while you mass this army, but fantasy was relying on deception, encouraging life to make a shitty composition. I guess that works too.
http://www.teamliquid.net/forum/viewmessage.php?topic_id=444447#7