So, if I understood you correctly, you are against hidden variable theories not because they are not directly measurable (after all, the wave function is also not directly measurable), but because we have a simpler theory that makes the same measurable predictions even without the hidden variables. Am I right?Well, that's of course not what we'd consider science. Then I can as well just stick to the observations themselves. A black box providing answers is not what we aim at in science. We want to reduce it to some (as few as possible) fundamental laws, which then however are indeed a "black box".
Fine, but then remind me why did you recently found Bohmian mechanics interesting in the realm of non-relativistic QM? How that fits into your general view of science?