If I'm reading this correctly, doesn't this suggestion completely defeat the purpose of allowing multiple keywords to a single icon?
For example, the icon I'm using has "angst" and "sad valkyrie in snow" as its keywords. If we implement your suggestion, and I make a post on Valkyrie Profile, you're going to force me to use the "angst" keyword to bring up this icon because it comes first. If I later switch angst to some other icon entirely, the post loses the icon it was intended to have.
The same problem exists in reverse, of course: if I instead put "sad valkyrie in snow" as the first keyword -- which is not currently possible, as keywords automatically alphabetize themselves -- and use that keyword on an unhappy post, and I later replace the icon with a happy-valkyrie picture, then I wind up with a happy icon on a sad post because the "angst" keyword was unselectable at the time I made the post.
At the very least this suggestion would require reworking the way icon identifiers work to respect a non-alphabetical order, but even then I think it destroys very useful functionality -- there are good reasons to have all possible keywords be selectable from those dropdown menus. Maybe there could be a better way to organize them than alphabetically, but this solution is not it.
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For example, the icon I'm using has "angst" and "sad valkyrie in snow" as its keywords. If we implement your suggestion, and I make a post on Valkyrie Profile, you're going to force me to use the "angst" keyword to bring up this icon because it comes first. If I later switch angst to some other icon entirely, the post loses the icon it was intended to have.
The same problem exists in reverse, of course: if I instead put "sad valkyrie in snow" as the first keyword -- which is not currently possible, as keywords automatically alphabetize themselves -- and use that keyword on an unhappy post, and I later replace the icon with a happy-valkyrie picture, then I wind up with a happy icon on a sad post because the "angst" keyword was unselectable at the time I made the post.
At the very least this suggestion would require reworking the way icon identifiers work to respect a non-alphabetical order, but even then I think it destroys very useful functionality -- there are good reasons to have all possible keywords be selectable from those dropdown menus. Maybe there could be a better way to organize them than alphabetically, but this solution is not it.