Myself, I am entirely content to remain married to only one woman, having lived that way for nearly 30 years, and being unable to afford more. It’s the young men that concern me, who are often forced to make huge concessions to get out of a bad marriage when they are not at fault, because otherwise they cannot marry again. I’m also concerned about demographics. A man who can afford more than one wife, and whose first wife is agreeable to it, ought to, for the sake of the nation. Arabs and Bedouins are not similarly constrained, and at this time the rationale of Rabeinu Gershom’s decree no longer exists.
You're mighty brave to be saying all this. An awful lot of people would like to forget that Judaism is an ancient Middle Eastern religion with (in many ways) more in common with islam than with Xianity. Shoot, I once thought I was going to be banned for merely explaining that the Halakhic position on abortion is not 100% identical to the Roman Catholic position.
While the Israeli rabbinate is at it, they can bring back yibbum as well.
Yibum is still around. I think one of the Belzer Rebbes did it a few decades ago.