I think some of the feat alterations should be included from here http://blog.kittenhugs.com/2015/07/martial-options.html?m=1
I would suggest the Defensive Duelist, Inspiring Leader, Tough, and Weapon Master changes.
I do think that Grappler needs a third quality since the errata removed the useless third benefit, but having a medium creature grapple huge sized creatures as in this benefit seems ridiculous. I would vote for adding a third benefit to it.
I would also like to add the suggested Thrown Weapon Master feat as a new option.