Give us back our Mentors. [SPOILER]
That Fractal shit that's going on is the perfect excuse. No Mists ghosts, no echos, no memories, just a straight alternate-reality-version of the Mentor, flesh and blood and all, from a timeline where Claw Island didn't end with death and sadness.
I don't care, I just want to have a conversation with Sieran again.
I think ArenaNet still needs to get a lot better in the keeeping content relevant department. So much of their work just goes to waste, because it is either no longer maintained or no longer interesting/rewarding at max level. It's a shame.
Nothing stopped them (beside own inability to come up with good and logical ideas) from enabling Claw Island outside personal story - all three mentors could be there as idle NPCs who wait for us for the encounter. Claw Island should be for Orr what Silverwastes was for HoT maps - a sneak-peek, preparation zone
But ye, since we got this plot thing right now - I support your idea