"MY habit before the box was to just send it way out in a dir until the warning came up, which is also probably why you saw them a lot."
Yeah, that's something I was watching you do-- you had me literally wincing!
I am very conscious of fuel limits and I don't need annoying messages obscuring the map. This is why I use Patrol mode for planes, or when transporting them to the front along a movement path, I make sure cities are within fuel distance.
Warnings are important but veteran players really don't need them. IMHO, all you need is a global Squelch Warnings messages command, or a dialog with warning checkboxes.
My .02.