Even though better support for tiling is coming, you can kind of do tiling in KDE – I’ll throw one app in the left half of the screen and another in the right half with the meta-right/left arrow combinations. With 3 screens, this gives me 6 slots for apps.
The meta-left/right is also useful for moving apps between screens.
Meta-PgUp can be used to change an app to full screen.
A demo:
I also set up several shortcuts:
Meta-enter: start new terminal
Meta-space: start/show workflowy
Overall, I prefer to not customize KDE a lot as it is more work to set up on new systems. Fortunately with KDE, the defaults are really good and provide most of what I need.
One wrinkle I noticed is that this only works in the monitor you started the application – otherwise it will move the application to the monitor where you started the application.
Thanks for the mouse tip – I have never done that before. It appears if you mouse it to another screen and dock it, then the meta+two-arrows will then dock it in that screen instead of the original – very nice!