I got me an M5 stompbox for christmas (nice!). The unit is even superior than the POD Farm I have at home in some of the effects it contains, but I miss one particular distortion called "Bass Overdrive". It's the only overdrive with rich low frecuencies in the whole "overdrive-dirtortion" zone. For bass players is the "Always On" kind of effect, and for metal guitars that require powerful bass is a must have on the L6 arsenal.
A suggestion for future firmware updates. Who'd like to have that too in your M5?