Minfilia as a Rouge

[RopeDrink]

Said Scions obviously won't play by the rules. While they're obviously not WoL level, they have always been represented as somewhat above the standard and have their own unique flares/oddities that won't be class-restricted. If it wasn't this way (especially if you ignore ShB and only look at the brief playable cameo versions of said characters in SB), they would forever remain sub-par characters with 3 abilities and nothing overly special outside of cutscene/plot-armour.

Minfilia as a Rogue makes sense on various levels. We've all joked and meme'd about how useless she was in ARR. Now she can accompany you as an actual combat NPC. Given she was practically raised by Thancred, who himself is most notably of the Rogue persuasion, him training her or inspiring her to protect herself now that she has returned just fits (whilst also not being experienced enough to go beyond Rogue), while he opts out of the Rogue role and takes over something else that is needed (namely tank).

This will also no-doubt be tied to her statement to the WoL in the past that she would 'return the favour' (watching over her) before transporting the WoD's to their own world. Now, she'll have your back this time.

The rest is just a case of reshuffling the deck. It'd be crazy at this point in the game to assume that only the WoL had a knack for multi-tasking, with the supposedly important Scions being stuck as one-trick-3-button-ponies the whole time. I just hope it all leads to them getting some more story development.