Let's assume I found that tags a and b are synonyms. Now let's assume that tag a is much more popular. Therefore, I am still assuming, tag a should be maintained while tag b should be the synonym. For example, java should stay the main tag in Stack Overflow, while it should have openjdk as a synonym. And not the other way around.
Now let's take a case where I gained 5 points at tag b, but didn't yet earn it in tag a. So I can suggest a to be a synonym of b, and not the other way around, which makes no sense. Is there any way to create a synonym in the other direction where I don't have the enough scoring? Is there any way to flip the synonym and the target, to not ending up with tags such as openjdk(just an example of course)?
Of course if I have the reputation to make tag synonym, I have the reputation to edit questions. So I can simply add the tag where I need it. But I don't think it is the right approach, as those questions might already have 5 tags in them, and giving up on tags just for suggesting a synonym looks weird to me.