Make Insignia stackable (in inventory)

Each Insignia (of the same type) takes up an inventory slot. So I found half a dozen Radiant Insignia and they're taking up 6 inventory slots. That'd be just one slot it they were stackable like crafting material.

It's basically the same with Runes (like Vitae e.g.): I'd like to keep them but each of them is taking another inventory slot too.

Is there any reason for these not to stack?

I believe this has been taken up before, somewhere.

Here: http://www.guildwarsguru.com/forum/s...php?t=10070551

Thanks for the link: It wasn't in the list and search doesn't work (at least for me). Sorry for the duplicate, someone feel free to delete...