As far as the tag is concerned, I don't think it is important enough to put on meta. That post is mostly concerned with the tags used on main, tagging on meta seems to be considered less important here on MO.

I've seen a mod here in chat, so maybe someone will notice this and make the synonym, if they consider it useful. (To make synonyms, a mod is needed anyway.)

I have made a post for history of MO on meta. The reason I asked about here first was that it would probably be better received if asked by a person belonging to MO community than by a newcomer, who is only active here occasionally, but we will see, maybe the reaction will not be that bad.

You are welcome @MartinSleziak! I already noted the post. Hope it will develop well. re tagging on meta: some moderators do retag on meta, so they seem to consider it as relevant. But having so many tags on meta is new. So, it takes a while getting used to for everybody I think.

@SébastienPalcoux: I don't understand what you're trying to accomplish with all this. If you want to add new features to MO, why can't you make a clear and concise feature request?