To begin, wrong section.
That said, I was thinking about guns this weekend. Take the fight at V90 on Compello. The spawn sat higher than the base. If you had a SP, you could have ranged the base from the spawn, like we used to with the old sight model. The bursting radius would be much greater, and if you were interested in dropping the guns, VT fusing would be awesome. To pull this off you would have to embrace combined arms, have airplanes and tanks to cover the SPs. Fire can easily be adjusted, we do have icons after all.
The question is: Would other players be willing to protect SPs while they went to work, or would they just end up as hanger queens?