I'm not sure if you understood both my contribution and how the SteemConnect works.

SteemConnect is not only an app for (for example) generating hot signing links. It is also an OAuth2 service for developers that allow them to implement authentication flow for their app.

Suggestions may only relate to significant technical aspects of the project (rather than processes or organisational issues).

I believe my contribution is related to significant technical aspects of the project - revoking tokens is an essential feature for OAuth2 service.

Suggestions are minor features / enhancements to an Open Source project.

Revocable refresh token is a minor feature idd.