In an area of the early game, Silent Moons Camp

you pick up one of a few weapons in Skyrim to feature the Lunar Weapon Enchantment. Nearby lies a book called "Notes on the Lunar Forge".

Opening and reading the book yields only a little text, but as it refers directly to the enchantment, the book clearly states

"It seems that once the sun has gone down, the Lunar weapons take on a vampire-like ability, transferring a small amount of health from the victim to the user."

Great. Awesome. As a thief who can use all the health bonuses I can get during combat, the opportunity to have an enchantment on my weapons that gives back a fraction of the damage I do in health would be insanely helpful (I'm level 21 and still can't defeat a dragon without kiting it to guard NPCs). Yet the description of the weapon in my inventory simply says that it burns the enemy when the moon is up.

Wait, what?

Figuring it might be a one-shot kind of deal or maybe it takes a little extra work, I take the weapon, disenchant it, gain the spell, read it through, consult the book again, try different soul gems, check online, and then realize that no matter what I do, my crafted weapon also features only the damage and offers nothing in the way of health transfer (something I'd much rather have in the first place).

Granted, it's a nice enchantment, the non-elemental damage addition makes it great for a few really specific circumstances, but otherwise, it's nothing like getting 10% health back on a 15x stealth dagger backstab and the ensuing fight in order to keep my pace up in a cave without constantly resorting to potions and the already pretty unhelpful food.

It's one thing to lack an enchantment that does such a thing because it's unbalanced for a combat/warrior type. That'd be fine. But it's quite another thing to have a game in which lorebooks are so primary to the experience, have such a fanbase that actually reads them and posts them on the internet for easy access to all and then overlook something like this, especially when such an enchantment that early on in the game could be such a boon to certain other playstyles.

Bethesda, I am disappoint...

You Dovahkiin have any ideas on what happened here?

EDIT: Readability/formatting and spoilertags.