Exactly when did the tanks and planes get the suppression shader? Exactly when was it a good idea for a SL to take a plane (other than observation plane and land it behind enemy lines to provide a spawnpoint)? Also, this suggestion would in no way prevent people in squads from lonewolfing. They just wouldn't get the benefits that the "blobbers" would.
The whole idea was this that in a warzone, when you hear the Sarge bark out the same commands as your drill instructor, you'll act reflexively, without thinking, and consequently don't think as much of your fear either. Also, being surrounded by your buddies, you'll feel much more secure. Now, there's no way of representing this directly in the game, hence the idea to use the suppression shader to represent this. Also, if the Sarge shouts that the Old Man promised divisional arty to unleash a barrage in two minutes, you should feel even more confident.
Re the "punishment" argument, using this logic, I could claim that people outside the squads are already being punished in FH2, because they cannot spawn on SL's and cannot hear the VOIP talk. Waaah! Not fair! Srsly, "rewarding" someone is essentially the same as "punishing" someone or at the very least, denying something from her or him.
As for the higher suppression, I've mostly seen the soldiers of 2nd Forum Regulars demand MOAR of it, but apparently the soldiers of 1337th Public Irregulars wouldn't like it or some such. This would be a nice compromise.
The map is part of the game IMO, and that was not what my suggestion was about. It was just that someone HIJOE'd the thread without making his own.