Ahh, if you wanna make it work for mobile I understand it might be a bit tricky. I imagine the unit's stats would need to be displayed in the "Unlocks" window (so that players know what they are buying) and also in game. It could be just a small "Info" button next to the unit's symbol that open a new small window with stats. I'm honestly not sure about the best way to do it especially if it needs to work on mobile. Something to experiment with... :)