Aw shucks, it 'twarn't nuttin. I needed the handle for my own models, and Eric up and kitted it!
Anyway, the handle is currently availible in 3 sizes, original, +10 and +25. My current preference for 1/2A is the +10 as it allows a better grip. I really did cut the original a bit too close, even for my small hands. Anyway, the +25 is great for up to .35 models, and if you reinforced the main panels with fiberglass, you could fly anything.
The expo function was intended to tame un-flapped models, and I have found that with flaps, you need to reshape the inserts to reduce the expo. A full radius is the first step, then you can go all the way down to a point to make the handle completely conventional. Since the inserts are pretty simple 1/8" ply, it is easy to make a vareity of shapes and widths to perfectly tune in your model.