I realize that this is a non-issue under emulation, but for actual Amiga hardware it would be nice if the WHDLoad team would embrace USB devices in future releases. Thanks to the Algor I've disconnected and put away my old Wizard mouse in favor of a Logitech optical USB, which is about the most comfortable mouse I've ever used. From what I've read on the WHD mailing list, some of those guys don't even know what USB is, let alone understand why it would be useful to use modern USB controllers with the classic games. It would really breathe new life into them.
As it stands, WHD freezes when either Miami or Poseidon is running while playing a game. It's easy enough to quit Miami, but quitting Poseidon shuts off all the controllers I'd normally be using.