Okay I'll ELI5 the distinction between Altair and Ezio roles... Altair is like a clone Trooper from star wars before the clone wars... It was more like a purely assassin Templar thing and I liked it very very much. Ezio is the survivor among the clone Troopers who rebuilt the creed.. so technically the creed didn't exist during ac2 actually... The creed I said not the Assassin's... Assassin's existed during the era but we're very scarce during that time and when Ezio took charge, he put the pieces back together and in brotherhood it was fully complete..
Now coming to understand Ezio... Before everything I say, remember there are two types of people virgins and non virgins, boys and girls, star wars fan and non star wars fan Ezio bootlicks and non Ezio bootlicks. Ezio bootlicks are the like nationalists... They like nothing else other than their own and shit on the others.. an obvious example was the transition of roles from Ezio to Ratonhnké:ton..
i for one think Ezio is actually a normie... He can actually be compared to Eddie kenway. Both were careless about the world. Both changed to Assassin's when their loved ones died..(Eddie's journey takes place real slow cuz in almost every memory someone close to him actually died) and both rebuilt the creed.(yes Eddie did rebuild the creed and then was murdered by mercenaries of birch)
The highlight is when Ezio's character arc shifts from being a playboy to being able to video call Desmond miles and knowing he was a pawn in a loooong game where Desmond is the endgame.
And the reason why you think Ezio brotherhood looks kinda bland and dull and all is cuz the levantine had a proper order... The Italian made modifications to the order so that the members of the creed are not tied to age old traditions and rites... Like having same clothes..
The family co workers thing is pretty easy.... You are actually fighting the weaker links while vulnerable so that you can lure the big guy out and in the process intimidate the opponent...
Ohh boy that's it... Thanks for sticking to the end of the ted talk