No one should be allowed to queue without a soul stone if applicable.

[swiss_Momo]

The PvP category of DF would like to have a word with you.

Nah. PvP already has this limitation. You need to be a non-BLU job to queue. As full jobs by definition start at level 30 at the earliest, that means PvP is essentially asking you to be at least level 30 with a job stone equipped. On a technical level job stones are considered equipment, and equipment is validated before you queue. That's why you can't queue for something where your ilevel is too low.

classes also simply don't have access to PvP actions