I've recently passed the 10k limit and gained access to the 10k tools. Reviewing edits certainly helps as well as reviewing posts flagged for closing (where I can directly cast a close vote myself if I think it is correct).
But I don't get the value of reviewing flags, where the only thing I can do is to add my own flag for moderator attention. Before I looked at it the post was flagged, and after I've looked at it and flagged it, it is still just flagged. Does the additional flag from a 10k+ user give any value for the diamond moderators? Or should I rather spend my time on the posts flagged for closing and on reviewing pending edits?