thx for reminding, i simply forgot about the research icon
Your research icon is great. Sorry, pd but the demon summoning circle doesn't look research like to me. It is the same type of demon summoning circle that is used in most games. And I would think summon, rather then research.
i tried espionage with a spy too, but i didn´t like it.
1) like pd said, it´s race-specific.
2) you have to make him look like a detective or something, with a hat, which makes it look very old-fashioned.
A magnifying glass or a detective with hat isn't a spy. Thats a detective, like sherlock holmes. A spy is within the enemies ranks, sending back information, doing saboutage, etc.
-A building exploding, ie saboutage.
As for diplomacy, that icon is fine. Sure, you could probably change the person figure to the right shape for the players race, but otherwise it's fine as it is, cause humans are playing the game after all. Of course one could be a human and one could be an alien (maybe an alien not in the game).