I suppose there’s the forum which any user with an account on the main site can use to comment about or bring up issues. Comments/hearts, general agreement on what should be done does tend to get things done, but some things not as quickly as others it’s true.
There’s also the GitHub issues page for the repo, and that has the ability to upvote proposals also. It requires an account, but I suppose trello probably does too?
I imagine if they wanted they could use the new news page to ask to vote on a feature with the emoji reacts 
Play Go at online-go.com! | OGS Or just a poll on the forum, but it would need a list of requests gathered together anyway.
Maybe it could be something to do in future, have a list of popular requests that might be viable but would need priority.
Yeah I agree it can be a hassle to get things up and running. That said I think with small things, GitHub can allow direct edits in the browser. Like in the case of these flags for the resources page, or the function that chooses a ‘language’ given a country, it might only be used on about two pages - an about page for the team and the resources page.
So it might be viable as a quick edit without having to build the repo properly.
It would certainly be simpler.