Then nobody would run it unless they offer 2-3 levels of experience and half the tomestone cap. The problem with MSQ roulette as somebody else pointed out is that the rewards are too good to ignore. Rather this roulette is part of many players' daily chores because there's such a lack of suitable XP sources in the game particularly if you're DPS or you're trying to level a role you're not comfortable with.
The correct fix (IMO of course) involves serving that need. We need better options for levelling. Story XP is stingy enough that you'll run into a wall unless you're overlevelled at the start of the patch. PotD/HoH, leves, and FATE grinding all have issues. Kinda hard to "grind" dungeons when DPS queues are 30+ minutes.
Only then can they convert Rhytalyn, CM, and Prae into solo instances. Perhaps Square gets that and that's why addressing MSQ roulette was stated to not be part of the 5.3 adjustments.