HID mapping support would be incredible, though probably very hard to implement, since you can't even edit them in Cross to begin with.
If it would be possible to add more functions to the code editor, that would make things a lot easier for me.
Basically find, mark, and replace functions are what I would want. It makes it much quicker when mapping controllers like the Novation Dicers. Since each scene on them use the same MIDI notes, but on a separate channel, I can just copy and paste my mapping for one deck and then find, mark, and replace the player family and the MIDI channels.
Right now I use a XML editor after using CrossMap to do these sort of mass changes.
2x Technics 1200 mk2 (w/ white & orange control vinyl)
2x Pioneer CDJ 850k (in HID Mode)
Pioneer DJM 850k
Mid 2012 15" MBPr (OSX 10.10.3) 8GB ram, 256GB SSD
w/ Cross 3.3.10
iPad Air (iOS 8.1) w/ Cross DJ HD and Cross Remote