"Unsellable" / "Unsalvagable" Mark

I'd appreciate it if we could get some sort of mark or something (or at the very least have it as an automatic quality of personalised weapons) that we could apply to weapons / armour / etc in order to prevent them being merchable or salvageable...

Thankfully, to date, the only things I have accidentally sold without wanting to were Superior Identification Kits.... and yes, purely by accident. Quite often there is merchant lag... and it took me a while to learn not to get impatient and click the sell button a second or third time, as it is still selling even when it isn't showing.
On a darker note though, I once got momentarily mixed up while trying to re-kit my monk and ended up salvaging the wrong pieces of kit... costing me a hefty sum in platinum and much frustration.

No matter what our efforts, sometimes mistakes happen... and I have a few certain items that are unfathomably valuable to me that I am frequently in fear of accidentally merching or destroying when emptying my inventory..

Is there any way that we could either have a way to mark items as unsellable / unsalvagable.... or else simply make it that we cannot merch nor salvage personalised items at all?

You can just hide a bag, then put the things you don't want to sell into the bag.

I usually put an unsellable item, such as a minipet, as a barrier between my sellable and unsellable items. That way if I get click happy at the merchant, it still stops at the barrier, and I don't accidentally sell my weapons. Again.