I am one of those who dont raid, reason being my work schedule prevents me from joining any static. In my opinion dungeons are hard enough, with some groups they feel easy but with others they feel ........
Do you really want to do raid level difficulty dungeons with random groups? I would be interested to see the clear rates from that.

Wiping city is not that hard and yet the wipes are strong in that one. That alone should prove that the playerbase as a whole is not ready for more very difficult dungeons.