Nice. It might be attractive to also include LiteCoin payments, since LiteCoin is strong again.

I would also vote for optional "auto-trade to BTC". As a provider I don't want to do manual trading at all, so it would be great if you would add the option for "auto-trade to BTC". When leaser would pay in DOGE or LTC, you would do instant auto-trade to Crytpsy (with the Auto-Trade option "Immediate & Complete sell") and provider would receive BTC only.