Bug:
If you go "Guild" -> "Members" and check any guild member's info, it shows "level" of all members to be "12" and "class" - actual level of the player (instead of "Warrior", "Mage", "Ranger")

Suggestion for improvement:
When you upgrade a building, the actual design or some features of the building changes also, however since the upgrad screen is blocking the view, you can't see what exactly changes.
What I would like is that I can see the building, click "upgrade" and at the same time see how the design of building changes.
Does it make sense or do I have to provide some sort of screenshots?