Nail on the head. If they tweak it right, you'll be kosher with Scout/Sniper at vast range; Auto, Scout, or Pulse at mid-long range; Auto, Fusion, Hand Cannon at mid-close range; and Fusion/Shotgun at close range. (Did I forget a weapon type...?) I wasn't as annoyed by shotguns as most (Use the Radar, Luke) but their range decrease might make fusions more apparent. I bet both will still be valuable.
Yeah, I don't see hand cannons becoming dominant. In fact, I expect ARs to remain the most commonly chosen weapon.