The game is fun for me now. Whereas it was "Wait for the new patch, adjust to the AE scale, rinse and repeat" for me before. Also the hours of pop-up watching for an opportunity in the web of alliances... Definitely not missed that either.
I was thinking more in terms of new features or overhauled features. The problem with AE was the constant knee jerk U turns on whether to have tons of AE or no AE, and whether vassal feeding was supposed to be the right way to expand or not.