FC5 didn’t have towers and FC6, as far as I know, has a single tower that makes a joke about it. I don’t beleive AC Odyssey had those towers, either. Can’t remember Origins. The tower mechanic was also only used to visualize parts of the map, sometimes with a unique goody at the top. It’s back to foot-based map discovery. The busy work here is talking about all the bullshit collectibles and similar scavenger mini quests. AC is full of chests and AC4 had some cave clearing missions and deep sea dive puzzles. You have to go to certain locations or complete a certain number of collectibles to unlock some equipment rather than relying on the campaign alone. 20 hours of story, 100 hours of fetch.