I play bf4 very often, I too like driving Tanks and LAV. Taking down air vehicles with a skilled tank shot is always satisfying.
With the LAV is like to use the SOFLAM (guided missile) .The gunner lock on the target, and any guided missile can lock on to it.
for exemple, if you drive the LAV with your engineer friends equiped with Javelin, they can exit the LAV once the gunner lock on a vehicle, and watch the 3-4 missiles fly to said target. its beautiful teamplay. imo.
See you on the battlefield FAM!