There's always a mix of continuity and change with the court obviously a point of continuity, but racquets are not.
The shift to the larger framed, topspin oriented game is a positive development but I'd watch old-style tennis if it were available.
The essential problem is that the game is dominated by horizontal movement from the back of the court and vertical movement forward and back from the net has disappeared.
This is indeed something that might be engineered back into the game, and it partly is with the increased use of the drop shot but the approach and volley is too high risk a shot these days.
And thats a pity.
Nadal is to tennis what 4'33" is to music.