Can't be worse than PayPal. Depositing 2k, then spending none of it and withdrawing it 2 months later might be odd. Either way, sending a photocopy of your ID is not unreasonable.
Do you have a source for your claim that users are transacting over $500,000 per day on Dwolla for Bitcoins?
Dwolla's entire purpose is not to use the traditional POS systems. However, they could certainly create their own inexpensive POS device with no interchange fees or use a cell phone.
Glad to see you sue over unjust laws but no need to bash Dwolla. The service is unbeatable compared to any other way to transfer large amounts of money.