Hello and thanks for the Feedback,
The icon obscuring the text is a definitely a problem, it wasn't picked up until we build because we mostly play in editor mode and there the scaling of the UI is of course different.
It's intressting that you're confused by the Mouse Icons as (if you do a quick search) this is a common way to signify these icons I would say. But it's something I can work on and improve by adding some pulsing graphic.
I absolutely agree with the Level Feedback and some of these levels are not here to stay in my opinion, they are more an exploration of the posibilities.