The cost of the Survival Equipment and Watch Tower technologies is high, and no one uses them until the game is in a very advanced stage.
These technologies are supposedly designed to be used in the Classical Age to counter cavalry rushes, but their high cost makes them impossible to acquire. Normally, premade teams rush you 3 vs 1 with cavalry around the 6 minute, and many, if not almost all, players don’t acquire this technology because of its steep cost.
Please, we need the Survival Equipment and Watch Tower technologies to cost half of what they currently do. I’m certain that by making this change, many players won’t lose villagers so easily and won’t abandon the game as quickly, given that the training time for villagers is very slow.