I can explore this in a later version to give server admins the choice of scaling it based on player count.
At the moment the set amount of time it takes to restore is configurable, it's just currently set to 10 minutes but this could change in the future when new features of the mod come out.
You mean bots to contribute towards building costs? It is on the list to do but currently bots themselves have been crashing servers so usually they are disabled for stability. Though like you have mentioned I have also played on the Totem Arts server with bots enabled and from personal experience I've only encountered issues when both teams are full of bots, maybe limiting amount of bots could help alleviate that issue though, more of a bandage than a fix though.
Since your here, here's a sneak peak of the next version, though this version is not quite finished yet:
The idea of this mechanic is that the structure that is being restored will be given a restore integrity bar and if the opposing team reduces that to zero then the restore fails and is prevented, the integrity of the restore can be increased by using a repair gun as you would with repairing a structure. If the restore succeeds then the current integrity value is converted to the health of the structure when it is restored so it's beneficial to keep this as high as possible before the building is restored, additionally when a structure is restored it will be restored with no armour and thus will need to be repaired.
New in this version:
1. Structure restores can be prevented by the opposing team by decreasing the integrity bar
2. Buildings which are being restored or in "offline" mode are shown as red in the scoreboard
3. You can visually see that a structure is being restored and the amount of time remaining
4. Team messages displayed to show when a restore is in progress and when completed or prevented.
5. Purchasing Hotwire / Technician using shortcut key now works
Remember that overall the mod is still very much a work in progress and that is the same with this version which still has a few things to add/change before being put onto a server for testing.
Timers such as time to restore are all changeable via config file and are intentionally short for this demo.
Feedback is always welcome!