What would you change?
CachyOS being the same level as mainstream as Mint and Ubuntu is copium.
Cachy is growing in popularity a lot. Negative publicity around Ubuntu is driving people to alternatives, and I’ve heard a lot of people are trying cachy as their first Linux distro.

People are trying cachy as their first Linux distro.

To anyone reading and thinking of switching:

DO NOT use CachyOS as your first distro. You will not like the experience, it was not made with total newbies in mind. It is Arch with a few bells and whistles, and you are not prepared to properly handle Arch, yet. You will get there later, if you want to.

If I am used to Ubuntu, would I ever want to be on a rolling release?

Depends on your personal preferences!

Rolling release typically delivers the latest and greatest of Linux, which is kinda cool. It also removes all the headache of upgrading to a newer version and the possible issues stemming from that. You get to see the gradual evolution of your system, one feature at a time, and you don’t have to wait a month after a new version is released, just because some program you need is not properly ported yet.

On the other end, any update of the rolling release system can end up being somewhat breaking, so if you prefer setting aside time for managing your system instead of having a nasty surprise at the worst possible moment and at the same time want to have your system secure and updated at all times, classic model will be superior.

In both cases, properly set snapshots save a lot of trouble.