You forgot that they made the best product they could at the lowest price.
Henry II was pissed when he found out GM was making 49 Chevies for .25 cheaper than Fords' 49 Fords
For what it's worth i have a prototype 6 volt positive earth i made for a model A sitting on the bench next to me. Automatic advance so once it starts you just pull the lever to full advance & leave it there.
Best thing is, it also uses the original points so you swap 2 wires and it's back to original points system.
Wouldn't be too hard to adapt it to a flathead, but you'd have to jamb something in the weights to leave it at full advance, or tie them together with wire.