Feature request: Custom grid sizes

[pbsds]

I have the grid size in the launcher set to 5x6:

But on a near 20:9 aspect ratio screen this does not end up with anything closely resembling square icons, which is what i want.

(highlighted with a keyboard)

Could you support setting custom grid sizes in the launcher, and not just have us pick from a selection?

[pio_zen]

I got one solution a few years ago. If I'm not satisfied with device launcher I immediately run Nova Launcher i had purchased for some peanuts amount of money.
It solved all launcher issues on Lenovo, Huawei, Xiaomi, OnePlus etc.