As I read:

AAPL is designing MAC OS to increasingly take advantage of Multi CPU and GPU processors.
Apparently LogicPro and Final Cut Pro currently deliver on this optimization

DaVinci Resolve (a non AAPL product) also mentions in their literature performance advantages of AAPL silicon vice Rosetta translation.

Rosetta is not part of this OS level strategy.

It would seem CPU intensive activities of BIAB (track regen for example) could well benefit from such OS enhancements.

I run BIAB on a MacMini M2Pro 32GB Ram 12/19 CPU/GPU. BIAB screams compared to the 2013 Intel Macbook Pro I ran it on.

Yet one can't help but feel BIAB on Mac/Rosetta is not firing on all cylinders.

Personally I hope PG Music will initiate a development effort before AAPL decides to sunset Rosetta and the process becomes a bit more of a scramble.

Certainly, a ground up rewrite is no small effort in time, money, people.
It's a serious long term commitment
A commitment to the Mac product some of user base would welcome.

biab2024(Mac) Latest Build
Mac OS Sequoia 15.0.1
Apple M2 pro 32GB Ram
Logic Pro 11