I don't know about the balance patch post TI3, I guess Bat and Wisp might get some nerfs again, maybe Dark Seer or Naix too, but I feel it wasn't like the previous TI where they were heroes that everyone picked and were the only thing that mattered(naga, morph, lycan etc in their time). Obviously Alliance drafted a lot of specific heroes and won all their games with these heroes, however they were the only ones performing half decent with these, the win rates on Naga and Furion are abyssmal and a lot of teams don't even draft them at all. Weaver looked like he'd be the big pick of this tournament, yet he lost so many games, halfway teams stopped picking him at any occasion.
There were a lot of heroes used this international, and a lot of strats used and I didn't really see anything that jumped other than alliance winning all their games, but not every game for them was a losing game they won by splitpushing, they won a ton of games in 20mins full agression stomps with exactly the same heroes they use in splitpush strats. It's like a safety net, kinda like how you pick AM as your safety net for lategame, Alliance drafted splitpushing lineups as a safety net so if shit goes wrong, they splitpush, dictate the tempo, catch up and fight on even terms or simply win without fighting.
I wouldn't be sad if Furion sees nerfs, but at some point you need to accept that the biggest factor in their victories was Bulldog, not the hero he played. Look at how many times Bulldog gets ganked on his Furion because he's overextended. Look at how often it happens for basically any other player. Guy doesn't die nearly half as much as any other player, and that's even when they play from behind.
As for the nerf, make prophet's TP cooldown based on distance teleported maybe? So if you teleport from one lane to another, you have a 1min cd or some shit. Would make it hard to do Rosh, see people are coming, TP to a lane, push hard, then TP back for the fight. If you see him TP top when you're close to Rosh, you know it takes say 1min for him to come back. Also shared cd with TP scrolls isn't a bad idea even though it only matters on Dire side imo and lategame it tends to not matter at all. Maybe also nerf the duration and cooldown of treants, make it more mana intensive early game. Possibly scale treants power on levels.