It always annoys me when people claim Celestia and Luna "Don't do anything". We've seen what they do, Luna patrols the dream realm every night and protects ponies dreams, she raises the moon, she even goes out of her way to put lavender all over the castle to help ponies sleep better, I imagine she does a lot more than that as well to help ponies sleep peacefully and have pleasant dreams. Celestia goes to meetings, signs decrees, goes to and hosts public events constantly, probably does a lot of paperwork and legal stuff they won't ever show on the show itself because it's boring and who wants to see it, not to mention raising the sun obviously.
The claim that "They don't do anything" always focuses on the events of two parters where...yeah, they're often kind of useless, or get kidnapped or something, and it's a little silly how often that happens but there's way more to being a ruler than just fighting off the big bad guys, the majority of this show even isn't actually about the villains either, most of it is a silly slice of life show, there's things in life that are important other than just fighting evil.
Anyway, I think with her friends by her side she'll probably be able to rule Equestria fine, the Mane Six have proven time and again they can do pretty much whatever they set their mind to, and the idea that she doesn't listen to them at all is kind of wrong, how many scenes have we seen of them sitting around in those thrones discussing things with each other? Yes, she doesn't listen to them sometimes, especially when she's under large amounts of stress, but she's shown to be a capable leader in other instances. At worst they might need 22 minutes to solve a problem.