Currently we don't have the best understanding on what causes concussions and longer term brain damage. So developing safety tests is difficult. The biggest knock against the VT tests is that they only test linear forces and not rotational, which are known to play a large role. Factors such as fit and head shape intuitively seem like they would make a difference, but again there isn't much data that I'm aware off. It's also tough to perform real-world measurements when the result of accurate testing is brain damage (volunteers anyone?).
I wouldn't call them crap, but certainly not the gold standard. I play non-check adult hockey at this point and so don't worry about it. Though if I was still playing competitive, checking hockey I would probably mostly ignore them.
To address the OP's question, I have no idea about testing new models.