For the time being, you may also use the Indie
tag for a reasonable approximation of works originating from the English-speaking world.
is there any discussions about changing the tag from 'yuri' to 'Girls Love' or something like that?
I can't say there have been serious discussions yet, but with MD going that direction it's definitely not out of the question.
And on a similar note has there ever been discussions of including country of origin tags?
Yes, somewhat frequently in the distant past. Given that we're growing more comfortable adding stories from China and Korea specifically, it's a discussion worth having. There have also been consistent discussions of a Long strip
or Webtoon
tag, so how we deal with all of these types of manga may change in the near future. I'm not settled on an implementation yet, but I would definitely like to address these in some serious capacity.
As for retroactive tagging, it is unfortunate but in general we're willing to deal with the drawbacks that any new tags bring, so long as they're creating some other value as well.