@Nodge You're doing exactly what Zarok was pointing out. Because some 'problems' exist for you, you're looking past or 'diminishing' the improvements that have been made as if they don't matter. People like making a big stink over what's essentially nothing, and visual changes to the UI are, by and large, exactly that. Avatars in the tech tree actually have been improved since their initial addition, if you've noticed. They used to be standalone techs, but clearly some feedback was given that the developers acted upon as they're now always bundled in with something else that's more important. Event buildings have always been a mixed bag as well. Were beach bars ever really THAT good? Log cabins? Snow globes? Some people prefer aesthetics over purely numbers, and there are always 'good' buildings that the highly efficient players can chase after instead if that's what they prefer.
Regarding your implied statement that OF is 'pointless', I'm guessing your city is just filled with event buildings (thus rendering all buildings obtained from the tech tree pretty irrelevant), as they're certainly more efficient than equivalent buildings from AF. Unless you're someone who dislikes the aesthetic? But you also mentioned 'useless event buildings' so I'm guessing you're not one of those players. So what exactly is it that you're looking for? It's unlikely that you're going to want to build anything from whatever the next era is going to be either, because (good) event buildings are simply more useful than researched ones.