My vote would be for TheKit's solution since most of my use of alt and ctrl is for irssi - alt/ctrl+n/p

I'd also make < and > map to SYM(alt)+, and . keeping the ; and : as labeled on the keyboard.

Definitely also need \ ~ | somewhere.

I was also thinking maybe OK could be a right-shift, you know to shift the stuff on the left half of the keyboard more easily.

With the ALT mapped, we don't really need a seperate key mapped for '\', - for e.g. we could make it alt+L to put it near the normal US placement.

just my $0.02.

This is the greatest thing since the N900 folks. TheKit is one of my heroes. <3