Absolutely agree. I mentioned validation loosely before (and the crossed fingers part) meaning that a full engineering analysis should be done including TV studies. Dan Horton here on VAF should be credited with opening people's minds on TV and you'll find a lot of discussion if you search here on TV from the last 2 years or so. Dan asked the hard questions of some vendors of gearboxes, sometimes with embarrassing results for the vendors.
Most of the new gearboxes developed in the last 2 years incorporate absorber couplings now and a number have undergone TV testing or at least run some math on the matter. Previously, only a handful of drives had much science behind them.
Direct drive setups still invariably have no TV studies done, people thinking without a gearbox, they will somehow be immune.
Dan was getting along with some math models to hopefully predict high amplitude rpm zones but needed some more practical data to validate the accuracy of the models. Not sure where that got to? Dan?
Ignorance is bliss as they say- until the crank snaps.