Requested feature overview description.
An option in the settings that would allow a user to hide all notes on posts by default, allowing them to click on an image once to view them as normal; alternatively, adding a second category of notes for spelling and/or grammar mistakes that could be toggled off completely in a user's settings.

Why would it be useful?
I'm not sure how others feel about this, but most of the notes I see are fixing spelling mistakes; they bother me, distract me visually from the image at hand, and seem unnecessary. At points I have seen notes used solely to add commas. I feel not much else would have to change since every post, if it has notes, has it stated directly under the image; if it is in a language other than English a user would be able to see that it is translated.

What part(s) of the site page(s) are affected?
Any posts that have notes, users' settings pages.

+1

That sounds like it could be a useful setting. I personally don't have a problem with notes, but I could see where some might have a problem with them being on the images by default. A toggleable option in the account settings sounds like a smart idea.

Yep. They also get really ugly when you have a large ensemble pic and every character is labeled and notes are overlapping. I know they're easy to dismiss but I'd rather not see any at all. They're more distracting than the minor typos they're trying to fix.