I love everything about the services you offer, but one thing I have noticed that would be useful is the ability to create MX records for parked domains, so that I can still recieve emails sent to that domain. Depending on the price, I would probably be willing to pay for such a service, although I wouldn't even need email hosting, I have hosting elsewhere. How hard would it be to implement? And are you likely to implement it?
I will add the suggestion to our feature request list. It shouldn't be difficult to do, but our feature request list is pretty long, so it may be a while before we look into adding it.