Форумы / Cotonti / Core Labs / Archive / Comments and ratings suggestion

IMO, existing comments should be completely replaced with a new module/plugin. Its architecture is poor and require tons of corehacks when you want to change something. What other features were requested for comments:

3. Complete add/edit/delete functionality depending on sed auth.
4. Pagination.
5. Support for "nested" view (tree-like).
6. Non-refresh edit with AJAX.

And could put comments and ratings together in 1 plugin. I've already made a similar plugin, it wasn't too hard.