These are good thoughts, but I would ask:
Do you think Top Pros would start to make this their putting style inside of 20'? Right now I think the jump putt is in use because it allows you to put more power behind a longer shot. Shorter shots don't need the extra power, and instead (like free-throws) rely more on being able to reproduce the movement.
What you are saying might affect the intermediate level players where a 2' difference is worth the risk, but do you think it'll drastically change the strategy of the best in our sport?
If it's strictly about power why do players jump at 10.1 meters? That tenth of a meter is a shade under 4 inches. The power gained by a jump seems like overkill to get an extra 4 inches of propulsion on the disc.
There are players for which the jump putt at least feels more accurate, whether empirical evidence backs them up or not. To the point where they'd rather be at 10.1 meters than 9.9 just so they can legally execute a jump putt (timing of release vs foot leaving the ground notwithstanding). Based on that, I could definitely see players preferring to jump putt almost everything outside of drop in range (say 5-7 feet).
Moreso as players develop their games in a world without a 10-meter circle. They may not bother to develop the skill/talent to make a stationary shot from 15-20 feet since there's no rule requiring them to do so.
Personally I'm rather agnostic about the 10-meter line. I'm fine with keeping it, I wouldn't be all that bothered if it went away. I also don't really feel like enforcement of the rule as written is all that difficult. It is only made to appear difficult by those that would prefer to see it changed or would rather not be bothered to make rules calls one way or the other.