I was going to post the same thing! Just peeked over 2500 on tanks last night, hoping to the same for DPS soon.
I'm still down around 1900 on support, though.
Trying playing Moira -- she's broken right now. Highest I've ever been previously is just over 3k on tank and I'm sitting around 3300 right now just from playing Moira.
Right click orbs only and use your ult on cooldown. Good luck!