What % of Android users actually want this? Do they know or care? I've been using Android since 2010 because it was open in ways that the Apple ecosystem wasn't. I do not want this and imagine hardly any other power users (for lack of a better term) do. I'm already using a mostly deGoogled device but this really seals the deal. I have been longing for a true Linux phone for years and now seems like a good time to get…
It would be good if there was less malware and outright scams in the play store but that's really orthogonal to the developer verification issue.
Just to drive the point home. Not that you would do this but you _could_ even implement such a system fully anonymously - with uploads via tor and payments via XMR - and it should still work just as well.
Add in a third even more expensive tier for those providing source code to the auditor where google verifies a signed deterministic build the same way fdroid does. Now clearly mark the three different tiers in the app store.
And if they went this route the next logical step for highly sensitive stuff like banking and password management would be a fourth licensed and bonded tier where a verified individual located in a friendly country took on liability for any fraud or other malpractice. That tier would be the equivalent to the situation for civil engineers.
Instead we're stuck in a reality where I don't trust sourcing password managers (among other things) from the play store. Those only ever come from fdroid for me - you know, an actually secure model for how to do app distribution and verify builds.