I think it would be nice if you could click on a tech that you have already researched and have it bring up the screen that you get when you first discover it. I think the descriptions are great, but I hate how I can't go back and review my favorites (if I want to go back and look at a Phaser one it means a lot of replaying of the game just to see one screen). I don't know if this would be hard to do, but I would sure enjoy it.