I fail to see the difference between the first two options.

EDIT: Is the item left intact with the second option?

Anyway, there are too many mats in circulation already, no need to add more/remove less.

I'd like to see weapon and armor deconstruction yields left as they are.

Instead, I propose that perhaps jewelry items (green and above) become deconstuct-able/disenchant-able for a shot at runestones (and possibly other items).

I chose other because I could see, as a rare component of a deconstructed item that has an enchantment could be, like the material, trait and style components, could be a glyph for the enchantment (not the runestones) as it is part of the deconstructed item, that glyph could then be used to enchant another appropriate item or it too could be deconstructed.

Just like a deconstructed weapon like a Sword or Dagger may return 1 or more bars of the metal it is made of and not ore, any return from the enchantment should be the finished product (the glyph) and not it's component parts, if the glyph is not returned then no part of it is returned, just as not all items deconstructed return the trait, style or materials used in the items creation.

but with one exception.

A max level crafter (not talking lvl50 here) who has researched all traits (8 because i think that Nirn trait was introduced badly to the game) has to be rewarded
for all the time he/she has invested in research.

Meaning: The return of items from deconstructing should be substantially higher (disregarding the passive here) if he/she is a max level crafter.
I shouldn't just get 1 pitty legendary item back if i have invested 8 or even more to create the item.

Really, being max crafter isn't close to what ESO has been promising.

@Rodario‌ Yes, your edit is correct. It was just hard to fit the fully formed ideas into a poll option.

With the first option as @AshySamurai‌ mentioned you would deconstruct the item like you do at any other crafting station, but the yield would be a rune stone based on the enchantment on the item rather than wood, metal, cloth, or leather. As if you were deconstructing one of the enchantments itself.

With the second option, The item would remain intact to enchant again which would smooth the diminished returns of enchanting. Sure there are a good number of these stones out there. But rather than just spending a bunch of money on Kuta, you could have a chance at regaining the runestone and reuse it to put a different enchant on the item.

Both options would add a bit to faster inspiration gain, which isn't as much of a problem as it once was, but.

I also agree with æxæ's reasoning