I believe that Shenmue was like a proto-GTA, by the time Shenmue III arrived… the formula was not only perfected but improved upon by the likes of the Yakuza series. For a new Shenmue to succeed, it would have to match Yakuza level depth and add the level of attention to detail like the original Shenmue entries provided. This is to say the least, unlikely in the best case, and impossible if we are realistic when considering risk, budget, current franchise strength, etc.