that every building in a city´s radius increases the caravan income of a related caravan (needs a caravan´s city-visit to take affect)?
that you can assign your personal hotkeys to nearly anything in the options menu?
Use that to assign a hotkey for temple, tower and fort.
that you can use the F-keys for shortcuts? I use F1 for granary, F2 for lumber mill and F3 for smelter.
... Now it is your turn.