I have two ideas that might help avoid the instance where a guild needs to fight 1vX to defend the last fort left.
1. Make everyone start with it's own fort and make people go fight and take others ppl forts for more resources
2. We have been already explained how the number of available forts are determinate , problem is when there are not enough guilds that participate we get to fight 1v3 on the same fort. People are frustrated because is rng depending on who gets the last hit.
My idea is after a guild wins a fort and leaves , recalculate the number of fort available and if needed add another one 5 minutes after the guild leaves, so we will avoid the 1v3 experience . We keep doing that until there are only 2 guilds left at the end that will fight 1v1 for the last fort.