This just enhances the historical inaccuracy that siege engines shouldn't be used preferably for destruction, but for capture. Of course, the problem is OP siege, but when people bring it up, then some jump to say that they “don’t understand the game “ and “things are balanced”, which completely misses the point of being inaccurate, thus counterintuitive. I could make melee infantry fly and make a perfectly balanced game.
Something that could improve the AI is if ranged units keep their distance, I just mow them down with slow infantry with the Spartans, and should have a way harder time.
Edit: I seem to remember this was the case in the first AoE...
Backlog milestone to my understanding is because on trac you couldn't have no milestone assigned. So no milestone and backlog are defacto the same. Personally I prefer no milestone to backlog, tho looks a bit awkward if there are only a few with no milestone. Anyway I treat them the same.