Completely understand, and while v5 will introduce breaking changes (which is largely the point of major version releases) I would absolutely not expect the same level as you saw from v3 → v4.
For us between v3/v4 we had roughly 5 or 6 years of technical debt we had to deal with to build several new features where as with the future we are hoping to do small major versions once a year and make those migrations far less painful. Instead of dealing with an extremely massive amount of debt every few years we feel it would be better to deal with it in smaller bite sized chunks once a year. While we are still defining the scope and timeline for v5, we expect to start working on it towards the end of 2023.
If you haven’t already please do sign up for the cloud waitlist as we are doing a private beta and soon a private soft-launch and pulling in batches of users every few weeks to allow for testing: Strapi Cloud - Your Headless CMS Managed for You
Thank you 
and we do greatly welcome the candor feedback and dedicated users like yourself.