Quote Originally Posted by Veloran View Post
There is a dimensional barrier separating the Source and shards, presumably created by Hydaelyn during the Sundering. If killing Zodiark dissolved his barrier around the star, it's possible killing Hydaelyn also dissolved the barrier between worlds. If that was the case, I'd guess the most pressing issue would be the Thirteenth and the Voidsent.
Very true. They'd have a vastly greater supply of lifestream aether to nom on and they'd do it. Of course, it also might make it easier to travel there (and any other shards) and infuse the planet with some umbral light from elsewhere to fix it, if all the lifestreams are able to connect freely now. Heck, that might be how Y'shtola manages travel now.