From my understanding of how aliases are implemented, they should be able to contain special characters.
I figured this would be a useful way to get around not being able to have special characters in file names.
However, if I create a note with a standard name, then give it an alias that does contain special characters, I get the standard error about special characters:
It would be good to remove this error, if the label is an alias.
If this were done it would presumably be another quick step to just allow notes to be created from tags containing special characters, by substituting them in the filename but auto-filling an alias.