When I played Elemental, I stumble in two unhandy things.
1. Unit cycling. Most known strategy games have buttons for cycle available units. Elemental is not. It have icons for heroes, but all this peasants, explorers or warriors goes unnoticed. It causes two problems.
For first, I cannot be sure where are every of my units - I must search it manually on map. It is tolerable in the beginning, when I can easily keep everyone in my head, and every unit distinctive from each other, as it is only several of it. But later it become all alike, and I am overwhelmed.
And for second, I cannot be sure that all my wanted units made it's turns, except if all units made it. It is minor issue from the beginning, but it grows with time, when I control not handful, but tens of units.
2. Spell research pop-up. I haven't it. Several games in row I didn't research anything on first moves just because I forget about it, and there is nothing to remind me about it. I believe, the same thing is true with city building, but I cannot be sure of it, as I begin to fill queue just as receive city 
(and even if it is so, it is less important).
