I think they should address 2 issues with roulettes.
It should not be possible to avoid content in roulette by lowering your ilvl on purpose. Yes, LotA is faster than Dun scaith, but roulette is there to fill queues.
That means, the requirements would not only have to be tied to your ilvl but also the ilvl must be tied to your actual lvl.
So, for example, if im lvl 61 i need a min ilvl of 250 (for example) to even join any roulette.
That would at the same time fix the issue with ilvl in leveling roullette.
After that, we only need those ilvl restrictions for the direct queue for the leveling dungeon.