I’m not sure if this will address your question, but I was with a club that players that would bring a collection of bats to the field - depending on the situation that they faced during a game.
I’m not a batting coach, nor do I have the knowledge to qualify what I saw other than to witness situations and circumstances. But on one occasion I asked a team member why so many bats? His response went along these lines:
He had no less than five bats that he’d bring to play, each with their own characteristic. Some where short in length, other longer, while others yet where less tapered at the neck - based of the barrel, while others were like a whip neck. He also had a collection from different manufacturers. He had the Slugger, Worth and a couple of Big Sticks (Rawlings). The two (2) Worth bats were heavy at the end of the barrel (sweet spot), while his other bats were less so.
To watch this man bring this collection of tools to his trade was like watching a PGA pro on the tour - each bat (tool) was for a different situation.
For example, if a bunt was on, his selection was narrowed down to a few of his favorites that suited him on that particular day/night. If on the other hand he wanted to place the ball in play and advance a runner for either a “hit-n-run”, or sacrifice - again he’s select the proper tool for the job.
Now you’d think that such a system would be easy to spot, pitch to, defend. Wrong! The man left our club and went elsewhere - stepped into the box whereas our backstop spotted the “going for the fence” bat, so he called a pitch to take away that edge. BUNT, down the third baseline right between our man on the mound and the catcher chasing after the ball. I was in the bullpen at the time, but I had a clear view of the look on our pitcher’s face -“ Yeah - swing-away my !@#”.
We had another man that would always take his 32" bat up to the plate on his first up-at-bat.
He was a power hitter, a real moose. Like clockwork the very first pitch that he’d get -without fail would be inside. Well, because the sweet spot was moved a lot closer to him with his swipe path and swing pattern, more often than not a quality contact was in the cards. On the other hand, he did break a lot of bats during the season - BUT, did ring up a lot of doubles.
He also went elsewhere, but in his case, our rotation faced him with a lot of success. He wasn’t as flexible as others.
So I guess the size, shape and other particulars of a bat (wood now) depends on the personal persuasions of the user. Taking into account that the user has said persuasions.