> It would be great if some of those "crazy 40s-60s concept vehicles" could be revived with the modern technology.
Yep, i wish some collector type (similar to car collecting Leno) spent some money building modern versions of at least some of the most successful/feasible models from the "wheel of VTOL misfortune" https://vtol.org/vstol/wheel.htm . Back then it seems to have been some kind of "Jurassic explosion" of VTOL innovation, and hopefully these days we're having some small renaissance of it.
Someone might build scale model drones of a few of those. But manned aircraft would be suicide weapons outside of a carefully controlled flight test program. There are just so many failure modes.
Video in the linked wikipedia page is too short, this one is better [2].
1. https://en.wikipedia.org/wiki/Coand%C4%83_effect
2. https://www.youtube.com/watch?v=JeHY_c13gVA