I every so often stumble upon an oldish challenge and find myself compelled to edit a lot of answers in order to make them follow the standard/new header formatting (## language name, bytes count).
However as I have not 1000 rep yet, all my edits are going through the review queue and so i fear i'm cluttering it for essentialy nothing.
Should I continue my edits, or should I let someone with enough rep stumble upon it and "correct" the header without having to go through review?
But only if you don't bump many challenges. Note challenges rather than answers, feel free to bulk update all the answers to a challenge as that effectively only bumps one challenge once. It's one thing to have an old challenge near the top but a completely different story when it's dominated by them. This is our policy when doing major tag edits when introducing tags.
We rarely have anything in the review queues and when they do, they get swiftly emptied again. I doubt our system will fall to a halt if there are slightly more items in the Suggested Edits queue. An advantage to doing this is that we keep consistency across the site and that can only be a good thing.
If you do go about this, see if you can improve answers in other ways such as improving any obvious spelling mistakes (though regional spellings don't count) or the grammar.
In conclusion, the answer is the same if you have the editing privilege or not - don't do it in bulk.
## language nameor# language name. I've seen people use both so I'm not sure which to use. I suspect that it doesn't matter. \$\endgroup\$# Python, for example, but if a language has a long name, or a lot of info has to be included in the title of the answer, I use##. \$\endgroup\$## languagebut that said, the consensus is not very clear \$\endgroup\$