I'm no Annacone, but if I was federer's coach I would advise him to start pushing like ferrer/mugray, that'll keep UE's down and give his overall game more consistency. His overly aggressive style is precisely the reason why dull has always owned him.
that's the worst thing he could do
this isn't 2006 when frauderer could out run and out rally choking mugs and thereby appeared to be fit and athletic
if frauderer wants to keep in with a shout, he has to be aggressive
come to the net, use the forehand to approach, cross court and down the lines, attack the second serve (lol), look for the break in a set then serve it out
take some tips from sampras, basically