All the major "realist" attempts to reform the foundations of quantum mechanics – de Broglie-Bohmian mechanics, Ghirardi-Rimini-Weber-like collapse theories, and Everett-style many worlds – are known to suffer from serious diseases. To a large extent, "realism" itself is the problem.
Off-topic, physics: In Physics World, Sylvester Jim Gates Jr explains why he is Sticking With SUSY. Doing something else would be as unwise as to conclude that giant sequoia trees don't exist after looking at the U.S. East Coast only. Supersymmetry, a Bose-Fermi symmetry, is really needed to "deeply" explain the established fact that the quantizations of fermions and bosons are so analogous; and to cancel lots of destabilizing divergences.I am still willing to admit that there is no truly "rock-solid proof" of the statement that "there cannot be any realist reinterpretation or 'improvement' of quantum mechanics". This sentence is composed of words and we don't really know what the "most general type of a theory we would naturally consider realist" looks like. We can't define it. Maybe a way to reformulate quantum mechanics "smells" realist and all the "novelties" of quantum mechanics are traded for another feature of the reformulation that seemingly does something else than to refute realism. I find the existence of such a "realist" reinterpretation – even in this vague, generalized sense – extremely unlikely but I can't really "prove" that it doesn't exist.
So I am always open-minded when I read about a "completely new" approach to the reform of the foundations of quantum mechanics. Every such an approach may only be abandoned after we actually identify its lethal flaw if it exists. Of course, the lethal flaws are well-known for the most notorious "alternative approaches" and most articles about such matters share these flaws. However, when something is sufficiently new, one has to look at it with a "new dose of potential enthusiasm". That was also the case of the "new interpretation of quantum mechanics" (note that before this sentence, I've managed to avoid the word "interpretation") that was hyped in Nature yesterday:
A quantum world arising from many ordinary ones (Nature, popular)I must have heard of "Physical Review X" ("X" probably stands for "XXX", or porn for short) but the shortage of meaningful papers in that outlet has made me forget about the existence of the journal again.
Quantum Phenomena Modeled by Interactions between Many Classical Worlds (by Hall, Deckert, Wiseman, Physical Review X, PDF)