I wouldn't downplay an aftermarket charching handle/configuration. What M14 is doing is simply being the first to create a recognizable rail system, patent it, and be the first 'go-to' for any source of Type97 accessories. Anyone can pop the rivet, and slip a bolt through it. An SL8 style would be nicer, however I would settle for a tabbed bolt/blade arrangement.
What's more important to a firearms manufacturer? Allowing the competition to mass produce the single most important upgrade for the T97 - a rails system. Which will bring in the most $$$, or worrying about the second place consideration that any local machinist could do? What would a polished one-off example cost? $80? What you are asking for, is akin to demanding .50 beowulf mags, when you don't the lower reciever to even accomadate its operation.
Simply put: patents trump [inital] comfort, where a business' interest is concerned.
