What saddens me somewhat is the thought that some player who is currently playing and young is going to be become a 10+ slam winner and we're being shown now that even in mid to late 30's, they are still getting beaten by the last gen. Thiem is a good EG of this but it's also Zverev and Medvedev and maybe some others. This will be the first time i've truely felt like "new" players are not as good as the older players and the sport isn't getting better or changing, it's regressing.
I grew up in the 90s with tennis when the game was changing and improving, watching players like Sampras and Agassi and then the transition to Federer and Nadal and then Djokovic and Murray. It just seemed like tennis was improving and the game and racquet technology was just moving forward and now it's just stopped. There is no new style, it's the same except the new players are simply not as good and it's somewhat depressing.