I don't think it was there before but I'd like to thank for this sweet feature that let us modify the column grid on tablet viewports.
The only thing that I'm missing in here is the same ability for phone landscape and portrait. I have a following:
which on tablet can be customized but on phone it looks like this:
or one under another. I think it would be best if we could modify this one as well as on tablet vioewport.