Workbench upgrades now... TC upgrades later?
What if Facepunch added upgrades for the TC like there are now for the Workbench?
We all know that it's so easy for people (especially groups) to raid and TC grief everyone, ultimately making people leave the wipe, and killing server populations.
So what if TCs also had upgrades that you could find and install?
They could do things like increasing the raid cost of the TC itself (similar to the "Reinforced" workbench upgrade), so it's more expensive to grief. Or, giving the TC the softcore mode buff that gives it a lingering building privilege if the TC is destroyed, so the base owner a chance to rebuild after the raid.
I'm sure we can come up with other upgrades, like upkeep related buffs or other anti-griefing things.