a mix of melee and range, in such a manner, that requires doing both.

aka, use some sort of melee ability, which grants a sort of instant cast to the next nuke.

then run out of melee range, to use a nuke (which can only be used far away) that grants another needed buff. (makes the melee ability ready to use again?)

But yeah, Ranged DD/debuffer WOULD sound like a mage, but looking at BRD, sounds more like a counterpart to BRD.
Lacking some dmg, to help everyone's dmg by lowering mobs defense, etc.

Might be Musketeer class, which becomes xxx Mage job. (Blue Mage maybe? since they used guns in X-2)
Then again, Might be Arcanist like everyone else suggests, and then is Time Mage or something.
(Time Mages main debuffs being slow, stop (stun or sleep like), teleport (not really a debuff, but maybe a push back?) Gravity(weight not hp dmg), and MAYBE a reverse regain, making enemies loss TP over time... or other DoTs to HP/MP of mobs.)

As for the "Melee Mage" PGL has this now...
For Jack of all trades, a few grab part of this, but never all aspects of this.
and as for using swords, there is only hope for a fencer again. (My hopes are, Fencer becomes RDM, which is a melee Healer)