I play Musha often, he’s not unplayable but his light attacks do feel alittle slow as well as his heavy attacks, which doesn’t really make sense for his Dual wielding character.
Lets be clear, he is still usable but changes have been made and you have to monitor your stamina more closely than before. Also if you mix up to a guard break you can only follow up with a top heavy, as side heavy attacks are now too slow to land immediately after.