This is hard needed. All the wallets are driving me nuts!

I don't know if QT wallets offer some kind of API system where they communicate commands within a system (non-tcp-ip). But then you could think of a proxy-wallet. A virtual wallet that needs the real wallet to function, but just helps in keeping everything manageable.

The reason I suggest this is because often wallets get updated to fix forks or issues like the 1doge minimum fee to prevent flooding the system. Effectively you also relay responsability for loss and hacking etc to the original wallets, not you. It would make development easier, I think, once past the stage where you have to figure out if you can communicate with individual wallets to provide VirtualWallet interface.

Also I think this would make updating existing wallets friendlier - your wallet could check for the latest version and notify a user.

I guess in a way I'm a bit inspired by MultiMiner and GUIminer, the first also notifying you of new updates (and downloading them upon user confirmation - great!).

Edit: Also perhaps running such wallets in a sandbox might be useful to prevent inter-wallet communication (in case of infected wallet download of some new Alt coin - I'm continuously worried about that).