My suggestion would be to either fix sleep or get rid of it entirely.
Other than the very rare Sloom (rare enough that I've *never* seen one, since I started playing after their heydey had passed), no monsters seem to deal sleep. This renders sleep resists on armor and sleep resist trinkets completely pointless PvE. Since there are no player weapons that deal sleep, they're also pointless PvP. And sleep vials are extraneous too. I don't see people collect/use them, and I know I avoid them myself. Compared to the other options, they're less useful and are kinda boring.
Sleep really seems like an evolutionary remnant, at this point -- something which was useful once but which has lost its purpose. Personally, I'm not very excited by sleep as a status, and my pick would be to dump it entirely. But either way, something should be done about it. It seems silly (and potentially confusing to noobs) for it to be lingering around in its current half-baked form.
they removed the ability to get sleep UVs already. they said sleep would return someday