That would only make matters worse. If a Libertarian gets funding, basically whatever Democrat runs the next time gets elected. If the Green party gets to %5, whatever Republican will be elected. It would be the same for Constitution as Libertarian, but even a bit worse on the Republican.
I don’t want to increase their spoiler effect. I want it mitigated. Then we can see about elevating them. The only way to eliminate the anchor of wasted vote, is to get instant runoff voting in place. Then you can vote Constitution and take Republican as your backup. Or Green and Democrat as your backup.
Once we get instant run-off voting we can do all sorts of crazy things. Like multiple candidates from the same party.