One concept I thought was extremely good was that rockets did nothing against infantry. This meant that AT Troops actually used their rockets against tanks rather than just whoring infantry. With grenades they were used for softening targets that were dug in and camping which is exactly what they should be used for, they were also extremely slow to rearm and relatively hard to use which is good, they should remain this way. The last thing we want in the confined corridors of Planetside bases is the frigging unbearable grenade spam we see in call of duty or even Battlefield 2.
I suppose the TL
R is
i) Make AT weapons ineffective against infantry
ii) Make grenades support weapons as they are in Planetside