Half-offtopic: I find it very interesting that Rasbian sticks to LXDE. I thought that was going to slowly disappear, with LXQt having developer attention and there being no path forward towards HiDPI and well, Wayland (because neither GTK2 nor Openbox support these).

LXQt currently still uses Openbox, but you can replace it with KWin rather easily. I don't know what is then still missing to create a proper LXQt Wayland session, but it seems feasible.

I guess, one does not really need HiDPI on a Raspberry Pi, but yeah, Wayland would be nice.