I've been thinking this one over for a bit. Despite being a tournament Federer won without dropping a set, no one actually talks about this Slam run with reference to how good Fed was there. Fed fans don't really talk about it that much (because it wasn't in 2003-2009) and Djokovic fans don't endlessly hype this one up like 2015 (naturally, as Federer didn't lose to Djokovic here). Whenever it even enters the conversation, it's just been mutually agreed that Wimbledon 2017 is "hard to rank because Cilic had blisters". I find this interesting because while Federer had a very weak draw here, Nadal had essentially the same situation happen to him at the French Open earlier that year (won it without dropping a set, competition wasn't good) and yet that one is typically agreed to have been one of his better performances at the French Open. But Wimbledon 2017 remains unrankable.
I'd like to invite some discussion about exactly how good Federer was on grass in 2017. From my eye test, he looked quite sturdy off the baseline as opposed to 2014 and 2015 where he was fairly substandard in that regard and had to rush the net more to increase his chances. This was a trend of Fed's 2017 season in general where he beefed up both his FH and his BH. His serve also looked in tip-top shape here, although he never had any serving masterclasses like in the 2015 SF vs. Murray.
Earlier in the grass season, he had strangely lost to a 39-year-old Tommy Haas on the verge of retirement in Stuttgart. Then he blasted his way through Halle playing some solid tennis and demolished Zverev in the final (which is still one of my favorite ABZ moments btw, along with the Raonic match at the 2019 AO and of course the US Open 2020 disasterclass). At Wimbledon, he beat Dimitrov, Raonic, Berdych, and Cilic, although none of those players were very good in their matches with Fed, at least none that I recall.
So how good was Federer here, if we can possibly leave aside the common answer of "it's hard to rank because of the draw"? Compared to his other versions on grass?