I believe an Interest Check thread should at least remain as "Interest Check" in literal terms for those who still wishes to contribute to the keyboarding community with their creativity.
OP is not obliged to be production-ready for "something that he's unsure whether Gh community members will be interested or not" just to present us the idea.
IC as a strictly pre-production announcement imho is just too much.
BTW, don't have a Kara, and not too keen on bluetooth so probably not interested, but GLWIC and your progression.