Was adding a bunch of items sold by various vendors, and I noticed something that probably should be in there - when the list populates of what items are found by the name, mousing over those items doesn't pop up a tooltip. Not usually too big of a deal, but the following is where this would be useful -
I populated most of his sell list (a couple items are still just completely missing from database) and as you'll note when you mouseover, some are from the Defiant Faction equivalent vendor. While filling in the information, I just had to guess which of the two item links to select in order to hopefully get the right one. Had mouseover worked on the selection process, I'd have gotten the right one each time.
I also don't see a way to fix this mistake now that I've made it either. Luckily the items are identical between the two factions so it's not a huge deal, but I do like things done correctly. :)
The only way I currently see to be able to be accurate here would be to use the item ID code in a different browser tab to look up the item each time, and that just seems like a bit of a headache when I'm looking at adding several hundred items over the next few days to the various vendors.
So, TLDR - add mouseover tooltip support on the "Add items" sections of the NPC "sells" and "drops" pages.