Appreciate your thoughts and generally like the idea. I have a lot of questions though.

Zaps also require a WoT layer or it can be gamed.
Yes there are challenges with follows, but getting devs to vouch might be even more difficult. Will devs vouch, or apps, or the npub behind the app?

I think curators might solve this problem. Let's say Ben Carman (who anecdotally is linked to Mutiny, Harbor, etc) has a list of trusted apps. Curators could perhaps be found by WoT + zap weight.