Thanks for trying the game out! You have a really great point in that some buildings are unlocked by default, such as the Workshop (I thought it was too important to lock it behind RNG), and all the defense buildings which were a last minute addition and had no cards (oops!). I think what I should've done was simply just add a card that simply unlocks the whole tab to make it consistent. I've noted on this and already wrote the code to fix it and will be deployed after the rating period ends. Thank you for the feedback :)
Also just tried your game, really good looking and funny dialogs. Have given you feedback there as well! Good job to your team on your game! :)