3. A Quest Into The Underground
http://youtu.be/wLiDr1NOiJc I imagine that many people, upon discovering a few handy fast travel points, forgot about AC III's underground system almost entirely. After all, traversing it was complicated to say the least, frustrating often, and actually discovering all fast-travel points is easier said than done. However, imagine that there was some reason to actually go down there and poke around, other than just the pursuit of convenience - a DLC campaign for example. Now hear me out, because I know upon first glance, that sounds like a s**t idea, but imagine that there were suddenly several huge, cavernous catacombs added to this Underground system, which contained... I don't know, map fragments pointing to a piece of advanced technology (something that, for example, would allow you to glide between rooftops - how awesome would that be?) Don't you think that would entice you down there? This would again hopefully be available from the moment Connor arrives in Boston so that in effect, it extends both the length and depth of the original game.