The best tool I've come across (on windows) for mucking around with fonts is 'Fontlab'
p.s. Should we start a font dev thread on the dev list?
Please do - that is what the 'developer' list is there for; the khotot project [1] is also very much in need of someone to take a look into it and to improve it further and/or to add more content to what is already there.
-gregg