Don't know if this has ever been brought up.
So, one fine day I fired up SF2 before trading out my tank control yoke for my flight stick and lost my joystick mapping. In the process of remapping my 12 buttons, I noticed under the targeting command list Target Object Under Reticle that wasn't mapped to anything. This command, as says on the tin, will visually target any object, friendly, enemy, air, land, sea, or structure over which the gunsight is centered. I've found this command to be very useful when I want my wingmen to destroy structures adjacent to the primary target or when making a carrier landing and needing to know my distance from the boat.
I haven't seen this brought up in topic before, so I thought I'd share.