This would only be successful in blue states that Trump has no chance of winning anyways. Red Supreme Courts will not allow this to happen, and their Secretaries of States and AG's will fight it as well. I don't see this being successful in swing states either.
This whole 14th Amendment route seems pretty counterproductive on the whole and will further perpetuate the conspiracy that the deep state is conspiring to keep Trump from winning the Presidency.
Doesn't need to happen everywhere; if he's not even an option in key districts he can't win.