I can tell you every single time I do MSQ roulette, which is daily for the Genesis tomes, there is a new player. Tons of people are catching up or just starting prior to ShB. So it's unfair for these people to be rushed through it. Now, it would be nice if the game had a way to flag who had not completed the dungeon before and could queue them together, but not sure that is really feasible.

I do think for the TIME it takes, the MSQ Roulette should up the Genesis tomes to 100 from 50. However, I will say the fact you can get around 4 million XP per run makes it worth it if you are trying to level quickly.