The Shattered Realms are kind of cool, a bit of a treasure hunt to find the Beacons, new dialogue, etc. But the waves part is what's making me not want to do them x 3 characters, plus a few more Champions runs for pinnacles - again x 3 characters. If the waves could be cut down dramatically, like 2/3rds less, I'd do it. They're not challenging, just boring and monotonous. I hate looking up and seeing I'm barely at 50%. It's like the usual boring pressure plate mechanic without the pressure plate.
Or better yet, get rid of the waves and just have the Champion there with its adds and you when you beat them you move on.