The roulette xp bonus is actually pretty solid.

Doing the roulette for law is still more effective than queueing a 60 dungeon if you've already done your expert roulette (unless you get bonus).

These zones are fun and deserve to be ran, and were ran for quite some time. They had the spotlight and now we've moved on. Now they still have their niche, but yeah they'll always be secondary to the newer content.