You might like Chimera Linux. It also “refuses to accept complex systems”, except it is still Linux and so does not have the limitations of OpenBSD.
Chimera Linux also uses doas. The Turnstile project is a good example of Chimera Linux rolling its own when no suitable alternative is available (to replace Systemd in this case).
I see your points, but Alpine already checks most of these boxes, so for me the cost of switching outweighs any expected benefits. (I don't believe in "just trying it out" in a VM, because the real issues crop up only when daily driving.)
