The hard part is that it locks you in to whatever people believe at the moment, which might be proven wrong in the future
For example, however you represent a comment, it could then support expansion of a tree to each evaluation snapshot point in time, like expanding a directory listing its files. My thought on this is somewhat similar to Wayback Machine’s interface per URL; the URL remains static over time, with a calendar and indicators for date of snapshot, and drill down into each snapshot.
In this use case, the comment is the URL, and each LLM evaluation of the comment is a snapshot. Append only.