Do you have any plans to add the different variants in as stylistic alternates (SALTn tables)? This is how FontFont encoded two styles of numbers and other various symbols into a single OpenType font. With FF Zwo I like some of the alternates but not others and this lets me choose.
The reason why we have a "font configurator" is because lot of terminals/IDEs/tools/OS, etc haven't got a full support for OpenType features. So we let users configure it as they like and it just works.