[To the devs] Implement this system to help those with bad luck with loot

[Kimzark]

But if you get the OP suggestion is also explorable. You can run coil multiple times, never get, lets say chest piece, and after 2-3 run just go to the NPC and buy it with the tomes from the items you have been passing/greeding...
Also i didnt mentioned on my previous post, but the bonus would suit only for coil... so its wouldnt be exploitable like you said.

[Orophin]

Only 1 drop for me in 3 months as a WHM. I don't mind as long as the myth gear is the same ilvl and I can eventually get it.

We've had 3 drops in 2 weeks in T1. Random drops are random.

Anyway, the whole point of the tomestone system is to fill in the gaps from gear that drop from the highest raid tier at the time. If you have crap luck in Coil you can always buy the Myth stuff. That's why it's there.