Most of the realms that actually need assistance haven't been connected or even mentioned yet. Realms like Scilla are still left alone.
wow or
Can't say I like the wait period for this feature. I wish Blizzard would've been very upfront when it was first announced about how long it would take overall and how slow a pace they'd be taking. Cross-Realm didn't take this long to roll out on this small a list of realms after the intended patch.