I know that feel. AC2 was the peak of being something truly special and mysterious and intriguing with the story. The way they blended history, conspiracy, and the sci-fi was so great. Too bad Brohood's story felt like a waste, and Revelations even more so (don't get me started on the Lucy bullshit). Then, as I was actually enjoying the modern day story in AC3, it ends with Juno escaping and up to Rogue and Unity, no one gives a fuck that an angry AI Goddess wants to destroy/enslave humanity.
Fuck that noise. Wish AC just stayed as a trilogy. But at the same time I love going into different historical eras for my inner history nerd.
Looks like AC and Korra share something in terms of squandered potential.