@GitLab Way too cool than GH, no need for separate special branch for html publishing, free private repos.
On GitLab CE, you don't have the possibility to see the history of edited comments.
Indeed, if you need to manage a community or even to simply have full traceability, this is an important feature that is missing.
Furthermore, the ability to approve an MR is something that I miss using GitLab.
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