Why not give it an individual upgrade (like the Gattling Cannon) to purchase a point defense laser system like the Paladin, only firing more and more powerful.
Or have an upgrade at the Propaganda Center allowing Gattling Cannons to shoot down missiles?
so wait... is the siege ability going to be an researchable upgrade at propaganda center or an upgrade like the gattling cannon or something available as soon as its built?
i kinda like the idea of it being like a gattling cannon type thing. my two cents.
Reminds me of the Siege Tank in Starcraft...
My idea is to turn it into a new object with an upgrade (like the fake GLA buildings). Don't know though if it will keep its original health ratio.
Sorry but the model is out of everyone's hands until the first public beta comes out. I assure everyone that once the beta is out you will be pretty suprised with the way the Siege Mode is used.