I'm a fan of The Hub and I've got about 25 sites up. What I don't like is waking up on a Friday morning and discovering that every site was updated. I know, you'll say, "Jack, just change the settings for each site so that the updates happen at different times or on different days." (then you'll roll your eyes)
I'm totally game to do that, but now I've got to create a separate spreadsheet to track when each site is scheduled for updates. Which leads me to...
I'd like to see some Hub reporting that would detail what days and times things were scheduled to occur so that I could spread them out over my work week.
And if we're going there, how about a report that would include the days and times for other things (SEO Crawls, Backups, etc...).