Especially filtering SIZES of products; I'd like to be able to find atomizers the same diameter as my mods. Or DRIP TIPS! I'm tired of browsing thousands of them and clicking on one I like just to realize it was too small or too large. Browsing huge categories can be a real pain. Thank you!

Agreed.
The whole search system needs a bit of work IMO.
Clear discontinued so I dont get pages of crap I cant order anyway, remove from search instead of only search for example I want to see all mech mods except 26650 so I want to remove 26650 from the search.
Checkboxes for search so if I wanted to see both Samsung and LG batteries in the same search I could select both but I cant because its one or the other.
Filter by availability like in stock or ships next day.

Yes yes 1000 times yes. Hope you're reading this FT!