i play Heimerdinger and man do guys underate that crazy scientist, i always get ripped for choosing him , but once i'm holding my own and getting kills, guys change their minds. Yes he is squishy but if you play him right, he is a beast, those rockets are a killer, just gotta make sure that the champion you trying to kill is one of the 3 closest enemys and you get major damage!
recently bought Blitz ( can't believe i didn't buy him before) and man oj man is he fun, that grab of his always causes a stir with the baddies.
the new guy Varus is also quite nice, but have yet to fully use him to his full potential.
last story short, this game is a great way to de-stress from work and other games aka BF3