Alright. My body is ready for all the hate I'm about to be subject to.
-SCOUT ROLE IDEAS-

//:Recon
-Fastest-moving Scouts that have very good Scan Precision. Downside: Very VERY low HP. The Recon's bonus should be a decrease on cooldown for a module I'll mention earlier.
-These are best for scouting out the enemy while avoiding conflict. All things scanned by this role are shared with ALL SQUADMATES.

//:Infiltrator
-Slow-moving Scouts (Compared to others) that have a very low Scan Profile. Downside: Can only fit sidearms, and, like I said, are slower. Have a bonus to hiding Cloak shimmer (When cloak is released).
-These would be used for battlefield assassinations. Running in and out of enemy-held locations to take out snipers, uplinks, heavies, or just general scouting.

//:Overseer
-Average-speed Scouts that have a high Scan Range and Low Scan Profile. Downside: Relatively low Slot Count. Has a bonus to Sniper Rifle zoom.
-Best for watching the field from above, the Overseer is the battlefield sniper, that see everything and are hard to see. Increased Sniper Rifle zoom makes him an excellent spotter.

//:Tactician
-Higher-speed Scouts that have higher base Scan stats (Precision, Range, Dampening) than a Light suit, but not as big a bonus as the roles that have less than 3 stat increases*. Downside: Lower Health and can't fit grenades. Has a bonus to Primary Weapon RoF (By a minimal amount).
-Made for picking and choosing his battles, the Tactician has high speed so he can get away quickly, and higher scan stats, which will help him decide whether or not he wishes to engage. Bonus to weapon RoF helps him eliminate targets quicker, but the loss of the grenade will prevent him from becoming a slightly-faster Assault suit.

-SPECIAL MODULE IDEAS-
I'll probably add more as I get less busy, but right now I only have one.

//:Infantry MWD
-In EVE, there's a module called the Micro Warp-drive. It basically makes you move VERY fast, letting you easily close distance, or just out-turn some of the bigger ships. In DUST, it would be like a mini teleport device. With a drawback. These would instantly teleport you 100m ahead, but have a 30 second cooldown afterwords. Suits like the Recon, which would have bonus to distance travelled and/or cooldown speed, could use this as a getaway device, or running further into enemy locations to get a look at their firepower.
-Use and downside: Get it out, press R1, and jump IN THE DIRECTION YOUR FACING 100m. Only forward though. You can't go straight up. Downside: If you press it and there ends up being a wall obstructing your path, you instantly take damage based on how close to the wall you were in the first place. Damage capping at 200.

Yup. Let me get something to protect myself from the oncoming storm.

There's no part where I said I wasn't a Scout, but I think you missed the part where I said I WAS a Scout. I've been running Scout since Chromosome, mostly with the stealth/assassination stuff.

EDIT: Also, could you please un-quote the OP? Thanks. :P

1) I'm a Commando user.