Yes it could. You simply adjust the level according to thenqueing job
If your queuing the alliance roulette as a level 56 red mage. Then you set alliance roulette I level to say 100 enough to enter wod.
Then when your redmage dings 60 the Ilevel for alliance roulette goes up to 230 or what ever the entry on dun saith is...
Then when your red magedings 70 the requirement would raise to i350 for the monetary..
Would still be perfectly functional for levelling jobs.
Theres already a level check in place on roulette so it shouldn't be difficult to scale ilevel requirements from that.