I am just new, but when I started playing, I noticed something very annoying. In the beggining at least, don't know if it is also later in the game, if you want to grow quick, you want to keep your queue's for buildings and technologies running at all time, I guess. In the left-corner beneath you can see how many activities you have running, which is really helpfull. But it would been even nice, if you could also easy see how many of that are buildings and how many are technologies, so you know what you can and can't do, and which queues are full and which isn't. Maybe 2 numbers in 2 colors? Or maybe a seperation when you click on it, to make an option to sort it. Don't know if you guys think it would be handy, but in my opinion, it would really help
E: I have played a little more, and the same goes for military training, which is also mixed with the buildings and technologies. So also that would be seperated, following this idea. I don't know if there are also other things that also go in there, stacking up on a pile, like attacks or something like that.
If it's not clear what I mean, just ask and I will try to explain it as good as possible :).
Anyways, thanks for reading