With most other DS2 content already added, it'd be great to see the addition of the Mythical cape (BIS for crush bonus).

I'd like to see it added for a 1M GP cost from an existing NPC, eg. Perdu. This way, if DS2 is added in the future as a miniquest, it's easy to replace capes with GP in an update.

http://oldschoolrunescape.wikia.com/wiki/Mythical_cape