On balance, I tend to think that any such effort will not be a serious one or actually backed by the people who actually matter.
That said Art, let's make the question a little more relevant, through precision.
First, let's assume, liberally, that there's maybe a baker's dozen states that may actually matter. I'll go with AZ, FL, GA, MI, MN, NV, NH, NC, OH, PA, TX, VA, WI. (If you really wanted to get edgy, you might throw in NE inasmuch as there is a horrific but realistic scenario where R's carry that district and we end up with a 269-269 tie, but let's keep it 'simple' for now.)
Now of those states, let's also assume that this is an action within the power of the executive branch, and not the legislature, such that the governor would be the one making the call. That pretty much eliminates AZ, MI, MN, NC, PA, and WI off the bat, inasmuch as those states are run by D governors. Further, I'll go out on a limb and guess too that GA, NH, and OH are probably unlikely given that Kemp, Sununu, and Portman are not actually crazy people and/or have a track record of not wanting to wade into nonsense - and Trump probably has GA and OH anyway. That leaves us with FL, NV, TX, and VA. So I guess FL and TX "could" - their governors are crazy enough - but Trump likely has those states anyway.
That leaves us with NV and VA. Interestingly enough, those two states represent a combined 19 electoral votes, which is precisely the number that Trump probably needs to get to 270, taking into account "likely" outcomes as of today in NC, GA, and other states in his favor, of course with the ginormous caveat that who knows where things really stand right now.
I don't really know much about these states' ballot access laws, or about NV's R governor. Personally, I think Youngkin has longer term ambitions than to go down this road. But realistically, "speculating" over this in anything but those two states is just an exercise in push-polling.