A fair number of people have been suggesting such things lately. I doubt we'll ever see it for D&D, but the way things are going you never know.![]()
Well, D&D is, what, 46 years old?
For 26 years of that time (more than half) saving throws were completely independent of ability scores*, and were related only to class and level. So it's not completely unheard of, right?
*Okay, you could get bonuses to saving throws for certain high abilities in some cases.