Aw, missed the extra key for a few hours, I was thinking about it :P
The pack looks lovely - and had a peek at what's coming. May I suggest adding multi-stage switches or rotation-based ones?
Or, if you're looking for ideas, in-out ones combined with a rotation (think of it as a handle with a central beam that you can press and then lock by rotating it). I'm just brainstorming, no pressure!
Keep up with the great work! (lo-poly ones would be great as well)