Job Level 1?

[Neophyte]

Then never do Level Dungeon Roulette.

Or, well, what about people who want 'the journey' just do those dungeons regardless their level.

Leveling a dps job (especially when it's hyped and queues are long):
Queue for all low lvl. dungeon around 3-4 times in order while doing fates and leves like 'Out to sea' (16k/min) and a daily levelling roulette (and guildheist).

Once 50, it's levelling/50/trial/MSQ/guildheist.

Or it's PotD right away.

You can have your journey. Just do every dungeon in order (instead of doing them 3x+fates to reach the next).

Een if you start ar lvl. 50, you have to get lvl. 60 first to even start SB MSQ. So just think of those people wjo want to play SB story with RDM.
DPS queues will be horrid anyway.. so giving people more different things to q for other than Haukke manor, lvl. 28, is a wise decision.
No one wants to sit in a 2h q for this one dungeon at SB release... spreading all those RDMs over most of the roulettes/dungeons eases that issue.