I am with Moe on this, I hardly ever take TL. If played properly there is not much action in terms of assualting the objective. Plenty of action though with spotting, calling, directing, and SMOKE!
I can't remphasize smoke enough on certain maps. when I play as either a TL or SL I always use smoke objectively and then try and resupply for another batch to build that obscuration screen. Some maps are not conducive to multiple smoke re-charges but on the bridges map (others too) it pays off with the ammo dump on both sides on the second caps. Sometimes I just hover there and wait for a recharge and throw again to help the riflemen get in close.
You may have seen me as Quinn in RO1 and now RO2, either shooting at you or with you. Cheers!