so it looks like this exists in Beta 1 to a minimal extent. Your fort, if killed, pops back up after a period of time. Too bad as a defensive structure it's mostly useless
I'm not sure regenerative fortification flags is a good call for the fast-paced gameplay Demigod is aiming for. I could see flags yielding access to unique neutral fortifications, as well as previously dicussed spawns, gold mines, creep routes.
For example: "You have successfully captured the Death Star Flag. Prepare to fire in 5, 4, 3...."