Needs:
WAY less enemies in the levels, with MUCH worse eyesight. I love stealth games and like that they took a step back to stealth gameplay in unity, but there is nothing worse than trying to sneak through a small area filled with a thousand enemies, all of whom can recognize you from a mile away and all of whom some how alert every guard in a 5 mile radious of your whereabouts instantaneously. This is especially bad considering how awful AC controls have always been for manuvering tight spaces
More in depth black box missions, but done in a different way. I want there to be actual exposition about the target leading up to the assassination. There should be optional side missions like in Ac1 that allow you to gain more info about the target, open secret entrances and exits, and all other sorts of things.
A main character that is a real assassins. I don't want yet another person that doesn't really give a shit about the brotherhood, but is part of it anyway, and essentially does it for his own purposes. Let's get somebody who is serious about the creed and is just interested in assassinating Templars like Altair and to a lesser extent ezio was, I don't want any love interests, Native American tribes, or pirate republics to be juggling. Those were all nice stories but I'd like a protagonist that is a real assassin this time, not just somebody who basically bumbled into the brotherhood and did a couple missions
Better random events. Look at GTA V, Red Dead Redemption, Dying light, or a Bethesda game for an example of what I'm talking about. I never bother to save any citizens after the first couple in unity because It was completely transparent how fake it all was. How about a random event that has me escorting a woman home late at night while getting chased by Jack the Ripper. Or a side quest that has me getting ambushed by a group of criminals in a back alley.
Doesn't need:
Ridiculous amounts of pop in
A modern days story that has me just playing a video game. Either do another Desmond ish arc, or just cut all the modern day shit out all together and make it a full on period piece
Don't have every single significant thing have a giant map marker. I want to find some secret places, or quests by exploring and talking to people, not by mindlessly running to a map marker like in every ubi game