I don't understand this... Why will an exchange ask for an ID before users can trade? I don't know because I don't use Kraken. Exchanges like Yobit, C-cex and bittrex which I use don't ask for any ID. OP can make a switch. Don't let Kraken limit you!
they deal with fiat so they're bound to all the money laundering stuff that requires id. alt only exchanges are creeping towards that too.