My only problem is: would they be useful enough/survivable enough? They just are a reactive unit, since i've no way of delivering them in enemy deployment...i could buy a rhino for them, maybe...
I agree they no need a way to get up close, but they only need to get into the mid-table. A cheep Rhino may be the best plan. The other plan is perhaps just walk them up behind the other rhinos, keeping them out of LOS until its time to lay down the plasma fire.