Him and Jayce are getting hit with nerfs next patch, Look up the current PBE patch notes to see specifically, too lazy to look it up myself.
To be fair, I'm still pissed about how Blitz fits into the Meta. One piece of shit "pro" player uses him as a support, all of a sudden he can only be played as a support or else you're trolling. Screw the meta.
It's most likely because of how much he fits into the whole "berserker" persona like Olaf, except for his crits and his god mode. Then again Koreans have a strange taste in champions.
blitzcrank mid is 'viable' and people will usually let you do it. <3
+50 Ability Power +300 Health +350 Mana UNIQUE Passive: Your spells burn for an additional 5% of the target champion's maximum Health in magic damage over 3 seconds (effect halved for AoE).
then again that's for tt only, i believe. but who knows~
also veigar has always been viable if you can survive his lower levels.. brand, on the other hand, suffers from a lot and frankly won't be viable from just a single item.
I saw Phreak commenting that some of the TT items may make it to SR if they work out.