User blog comment:ConnorKenwayRatonhnhaké:ton/How do you think Desmond's story will end?/@comment-4435191-20120726094136/@comment-5336493-20120726180757

The idea of planning Assassinations was still prevelant in the later games, just not repetitive. Ahmet was introduced in the last...hour of the game -___-

I think it has too do with them covering 2 entire games, and also being memorable, as you said.