jaelis
Oh this is where the title goes?
OK seriously, why is this actually a problem? I don't personally think it is so useless as people say, but let's grant that it is, that no elf will ever willingly fight with a longsword. So what? Why do (some) people get so exercised about it?The elf longsword problem has various alternative solutions.
And if you do need a solution, why not just remove the longsword proficiency, that seems by far the simplest answer.