I think it is bad form for the reasons Gabriel Sterling cites. It’s one of those typical “too clever by half” legislative maneuvers that usually shoots in the foot the party proposing it, see e.g. the 2000 redistricting by the Democrats.
If you want to do it in primaries, I can actually see that. But we’ve done quite well in Georgia with the 50% rule. While I generally have no problem with a 45% rule, let’s be clear that the only real reason this is happening is not to save taxpayer money, but to help the majority party.
And that makes the GOP no better than the Democrats, who did the same thing.
I will say this. If this moves forward, then the GOP would be wise to give greater ballot access to the Green Party.