Would there be a way to smartly sense incoming power from a dumb charger or add the dumb mode toggle to USB mode in a settings menu? I would love to be able to send the charge from my frankenPalm touchstone charger through the built in chargng system where the N900 hardware/software could manage it rather than using the charging board stuffed inside my Mugen battery cover.
Also probably less scary if the airport security were to open my phone.
http://talk.maemo.org/showthread.php?t=56950

A dumb mode toggle also might make more N900's repairable for USB charging even if they can't use the difficult to repair data lines.