Bender
G.O.A.T.
2017 was the year I really thought Federer’s forehand was back. I thought it really wasn’t that great in many of the years prior (between 2011 and 2017).Hard call for careers, as late as 2017 I would say Federer's forehand looked the better shot for HC/grass. On aggregate maybe you could say Nadal's better overall because it was just that good on clay. Federer's forehand seemed to decline pretty heavily with his movement in a way that Nadal's didn't. What are your thoughts on that?
Re your second question, the first part of that is the obvious observation that Nadal became more aggressive with the forehand (I’d argue from 2012 and onwards), whereas Federer chose to make it more and more compact from 2007 onward.
With Nadal there was arguably too much margin for error so he could attack with it a lot more without substantially affecting his error rate. Fed meanwhile was already aggressive with his, so increasing his aggression wouldn’t have worked. It seems he opted to increase his margins whilst taking the ball earlier to counter the loss in pace. I think his forehand actually aged naturally so it’s not a criticism or even reasonable to expect Federer to retain his 2004-2006 forehand for his entire career.
I think the bigger factor to me is that Nadal left so much potential in his forehand on the table for much of his career that his post 2016 improvements look like they are unaffected by his dramatic loss in foot speed from 2012 onwards. The amount of power he possesses at the very end of his range and how easily he can do it is what I think is masking his loss in foot speed, and allows him to be more aggressive in the first place. Pretty much everyone else, Federer included, loses a lot of explosiveness whilst trying to reach for a ball.