None of this crap is going to help "save" AM radio. The time to do something to save it was long ago, probably before the AM stereo debacle.
Opening a FM translator window will only further clog the FM band with the same garbage that's on AM now. What's the point? Or is that the point?
Modifying daytime and/or nightime coverage standards will only increase the jumble of noise on the band and make listening impossible.
Modifying antenna efficiency standards won't do anything to "save" AM radio. It may, or may not, increase interference and it may, or may not, improve local coverage. It would depend on the specific station and situation.
The only thing I would support is permitting modulation-dependent level control technology. On quiet passages the power output would reduce, on loud passages it would increase. That does make sense - but it won't save AM radio.
The *only* thing that will save AM radio is programming that the audience wants to hear. Unfortunately, that costs money, which is something the handful of broadcasting conglomerates will not consider since they only pander to the advertisers.
Stick a fork in it; AM radio is all but dead. That is the unfortunate truth, dammit...
I hate to say that, because I grew up with AM radio - it was all there was back then. But times change and the technology needs to change with it.
America needs a sense of humor...