There should be an expert thing like this for each class on bf4 i think. So Assault, engineer, Support, and Recon. We have the experts for the Vehicles already so why not the classes?
In my opinion the reqs. could be something like:
Assault expert: 10 assault rifle ribbons
10 medkit ribbons
5 defib ribbons
Full member to confirm
Engineer Expert: 10 repair tool ribbons
10 PDW ribbons
5 anti vehicle ribbons
Full member to confirm
Support Expert: 10 Ammo ribbons
10 lmg ribbons
5 Kill assist ribbons
Full member to confirm
Recon Expert: 10 spotting ribbons
10 sniper rifle ribbons
5 headshot ribbons
Full member to confirm
Each expert must be completed using that class and weapon designated to that class for ease of tracking.
Just a thought though..........