I wanted to share the following issues [1] & [2] with you and everyone else since the features you've mentioned are already being discussed. Feel free to leave your thoughts in there:
1 - A proposal to move MR Approvals to CE https://gitlab.com/gitlab-org/gitlab-ce/issues/42096
2 - Full history of edited comments https://gitlab.com/gitlab-org/gitlab-ee/issues/3706