It would be useful for those of us who use vertically-oriented monitors to have top/bottom thirds & two thirds options. There are existing left/right equivalents, but not top/bottom/vertical middle.
this can be done using the "custom move & resize" action
I can post the necessary configuration later (currently not at home) in case you need help.
I finally set this up and got the top 2/3 configuration to work, but this bottom 1/3 configuration seems to just fill the top 2/3...
FWIW, I came looking for this exact feature, for exactly the stated reason: I use a 90deg rotated monitor (so taller than wide). I'll try figuring out the custom way, but would be nice to have them in the predefined list.