I would prefer if Adobe did separate updates to fix errors, and to introduce new features.
To do as you ask there would have to be parallel release tracks, including the quite time consuming QC and pre-release testing programs. This would substantially add to the workload, and so overall slow down everything (or increase costs). Since a lot of QC is done by volunteers, you also then have to try to find volunteers to test new releases WITHOUT functional changes, taking away some of their motivation, making it harder to find volunteers.
Further, even costs aside, parallel development tracks always complicates software development, in terms of ensuring all bugs fixed in one gets incorporated into the other. Adobe is already really bad at managing regression errors, they would only get worse.
Taking that path would likely require the feature releases get delayed a lot longer, so as to have less moving parts in the overlapping areas. And if new camera support is in the feature releases, will REALLY irritate early adopters of new cameras, people often loud in social media circles.
It's really not an attractive path if you are Adobe for all sorts of reasons. I get the reason to want it, I just suspect it will never happen.