A couple easy button rebinds for consoles..

A couple of tips I picked up during the open beta:

Rebind -- Steady Scope to L2, which is also Zoom Weapon. It works really well when you are you using the sniper rifle and zoom your scope and "steady scope" happens at the same time. Steady scope is enhanced for the sniper rifle when playing Recon class and lasts about 10 seconds. I tested it.

Rebind -- Ping/Commo Rose to R1 (if you are right handed) and Grenade to L1. It helps you to Ping more quickly and more accurately and reduces accidental grenade tosses. 

You can ping targets while a passenger with the only problem being where you are pointing is a very, very tiny dot. Perhaps the developers would change that tiny dot into a slightly larger reticle which can be seen more easily.

I think other players also have handy tips which they have gleaned from the open beta.