This is just My opinion, so take it for what its worth.
I look at stocks differently than some and don't get caught up in retail hype.
To me, a stock has to fit me, I don't believe in adapting to a stock because the better the fit to a persons body , the better/more consistent he will shoot. The size and angle of the pistol grip, The length of pull, the height and position of the cheek well to the type of sights all make huge differences in my opinion.
As to the materials, strength has a large part to play in consistency and dampening of the harmonics also. Every chassis system that I have dealt with performed better after bedding. To me the reason was simple. No two actions are exactly alike thus the machined chassis will not fit as well without bedding. The chassis give you a good foundation and bedding it can only improve the fit between the action and the stock. Some chassis shoot well but not all.
The style of the stock makes no difference to me as long as it has the features that I mentioned. All things, accuracy, weight, looks, fit are important and as long as a stock/chassis has these things in the eye of the beholder, That's what counts.
As to the chassis replacing the other systems ? As long as there is different needs and likes I don't think it will ever happen.
J E CUSTOM