Thank you for the kind words <3
Everything youm mention annoys me as well and is due to the lack of space. I'll hopefully get an expanded version up by the end of this year. Your ideas for clock effects are awesome, as is the bestiary.
Mine diving is a fun premise and the module stays true to this theme. The layout is odd, though, with too much white space. The content would profit from expanding (i.e. a random encounter table) and an additional editing pass. Overall lots of good ideas and probably fun for a referee willing to put a bit of work into it.