Summary of my initial thoughts on Lens v2 (Bonsai):
https://autumn-provelone-3d8.notion.site/Thoughts-on-Lens-v2-Bonsai-c75176e2e1b043d18141da5d84fd8f84

If there was one thing about either the implementation or your proposed changes here that could improve Farcaster, what would it be?

Fc is on other end of spectrum, so different challenges. But from that list I would say app signatures. Provides trustworthy way of verifying that a message came from trusted client, which is helpful for mitigating spam and filtering out messages from malicious or low quality clients.