Breeze theme question

Hi, I’m new in this subreddit and after reading a lot of comments there are two themes that are bring up a lot hyva and breeze.

In the company that I work we been always fighting to make Magento faster but we always had to make luma compatible changes, we now have a opportunity to break that and after looking the docs of Breeze I see a lot of work involved to make the custom plugins work.

Have anyone has been down this road? Is this a possible way to go or the cost will outweigh the benefits of change of theme?

We also thought of pwa but that is another post for another time!

Thanks in advance!