Maybe a brief customizable tooltip would be good. For example, when you hover over the "Train Guard" button, it might say something like "Heavy infantry, slow but strong", or whatever the XML dictates. For "Build Summoner's Guild", you'd have something like "Trains summoners and researches Ancient Summoning. Stores Wood." That would be a lot more useful, I think. Does that sound workable? The downside I can see to that is that it might give the player less incentive to experiment.