I have done that briefly years ago but I find it a dead end.
After a while you just get used to the cursor keys being in a different place and if you’re touch typing it doesn’t mater much.
Also what you loose to cursor key placement you gain back on other navigation.
So in short just support qwerty and it’ll be fine.
IIRC dvorak even happens to split the vertical and horizontal movements between hands but while keeping them near each other, almost like RC car controls. Workman is comparatively a bit crazier with its placement, but it still doesn't bother me.
And while I'm diving into history here, vi (which stands for "visual") was a modification of "ex" to use the newfangled "video terminal" instead of the battle tested teletype machine.