Our team recently started using Notion for similar reasons. We all heavily use Google Doc’s but sending a link to a read-only or comment enabled doc gets messy for discussion very quickly.

Notion enables you to embed any number of Google docs along with other media: screen captures, screenshots, etc.

The trick is creating a documented process to moderate the discussion.

Jury is still out on long term viability as a tool, but we’re super happy with it so far.