Sounds like there's a lot to fix in Ben's game..
Yes, Keli and I have wanted Ben to get another coach than his dad, who really hasnt helped in his development as a player, look all players have some shots or serves etc that needs to be addressed, his return game to me is one area that needs development, yes he might have a weapon in his serve, his fhand is his best shot, though his return game lets him down, defense, also he needs better rally tolerance, too quick to try to end points which often ends in a UFE.