I've been asking for an auto wah since I got the HD500. The mutron model doesn't cut it for me, and I've missed the "plain but nice" auto wah on the XT Live. Why not, instead of a dedicated auto wah, create two kinds of modifiers for parameters? One, an LFO that can be tempo synced, and two, a touch/pick dynamics sensor, both assignable to any parameter that can be now controlled by the expression pedals.
That would make customizable auto wahs and "auto" lots of things If you like the idea, vote on it http://line6.ideascale.com/a/dtd/Auto-wah-or-auto-everything!-for-Helix/727014-23508