I totally thought you were talking about a pilot suit (which i think is going to happen?). Its a pretty awesome idea, but I think it would be much better as a highslot module restricted to scout suits than as a distinct role. Basically I imagine getting a drop uplinks on a building and spawning as a scout and gliding off, maybe with the ability to drop grenades as well. You could activate the wingsuit by selecting it via the weapon-wheel and it causes you to put down your main weapon, at which point the wingsuit automatically activates upon jumping off a building. Also if you try turning too hard you should lose your lift and plummet horribly to the ground (but probably surviving).

This type of mobility would have situational utility, but it would be invaluable if the enemy base was, say, built into the face of a canyon wall with plenty of AA blocking dropship/fighter attack.
These dropsuits, attacking such a facility, would skydive from a Heavy Transport or MCC from high altitude, use their small size to avoid turret fire, glide through the canyon at breakneck speed, then plant Drop Uplinks at the end facility to complete the insertion.
If we get exotic maps similar to that, then this type of dropsuit would be not only useful, but necessary for Attackers to have a chance. For now, however, they would have limited usability in the open-field facilities we fight on.

In short, I like this suggestion, but understand that this particular plastic shovel doesn't work well in the current sandbox.

EDIT: maybe a "wingsuit" module could be developed that is most effective on Light suits, but Heavies can still use it as a sort of parachute for the purpose of shooting their HMG while falling. This might give Scouts their maneuverability back, and add some refreshing verticality to current DUST gameplay.

You've been playing to much far cry 3.

I'd rather just wait for jetpacks.