The thing is just that it's ridiculously hard to make a Bitcoin client that works, is secure, and doesn't introduce completely nonsense quirks. Armory has been

The thing is just that it's ridiculously hard to make a Bitcoin client that works, is secure, and doesn't introduce completely nonsense quirks. Armory has been around since 2011 and still has major issues parsing the blockchain and making transactions that aren't padded incorrectly, MultiBit doesn't use change addresses and makes it painfully obvious how much money you have. There's not much margin for error and you certainly can't have a closed source (read Microsoft) branded client.