Was involved in a "what EFB/moving map do you use" discussion on a forum I frequent, and I piped up with my usual vote for iFly. Another person in the discussion said, "I liked that app, but the dealbreaker for me was lack of airway support in flight plans."
The example plan he used was: CYFD PIGLI V104 YXU CYXU
I can't remember if that's ever been requested before, or if it's on the future plan, but I guess there's one potential customer who chose a different app because of that feature.
Personally, I don't see that as a dealbreaker, and I would guess it would be a difficult feature to implement. My guess is you guys don't see it giving a lot of bang for the buck.
But I got the comment during a discussion, so I thought i'd pass it on....