Yes, the buttons need tooltips. Unfortunately the UI toolkit doesn't support tooltips yet. Will come some day.
The keeper reputation stat does nothing yet. It's mostly there for me to see if the calculation works as intended. I'll add messages to let the player know if e.g. food is missing for a longer time.
T is just a debug command at the moment, to instantly trigger a "t"rophy quest. The UI is broken in the r014 release. I've been puzzled myself, and I still am, how it happened that the message background was set to full transparency. I can't imagine how that happened, but well, it's fixed in the SVN and the fix will be included in the next version.
Thanks for the feedback

The tooltips are definitely on my list of things to do, the reputation calculation will take a bit longer to become meaningful.
I'm not sure if I should make a new thread for it, today I'm too lazy to. There is a sister project, which uses the same codebase, but it's "
just another single player rpg". For that I made a nova type spell effect:
https://www.youtube.com/watch?v=Hj0OyozWqwga) I'm not all happy how it turned out, but it works. And the current code in the SVN actually has a damage calculation ibcluded, while the version used for the video only had the visual effect.
b) The spell effects might be useful for Imp City too, once there is some sort of combat implemented. Planned are missile effects, beam effects, arcing trees and the shown nova spell type. It's been surprisingly hard to get the nova implemented, and I'm afraid the other effects won't be much easier, but missile, beam and arcing tree all are made of lines, so I guess once I have the line, the three effects will be done easily.