True! I had tried to get the costume, but was experiencing the glitch, which was not ideal and I promptly gave up haha. I do wish that we could choose who appears in the puzzle solved animations for the Daily Puzzles, as that'd at least give me an excuse to see the Flora outfit...
That is an interesting precedent to establish! I hope it becomes a more common thing, as it will eventually get kind of limiting to not use DLC characters for spirits/classic-modes as the DLC roster keeps on expanding. Obviously there are already a lot of characters in the base game to use, but the DLC ones are all very unique and would be good for representing certain characters...
If I where to hazard a guess, I'd imagine they will probably stack as the numbers rise. So first Ernest, then Hastings, then probably Sherl and Emiliana and then finally Katrielle who will hopefully wear whatever costume you selected for her.
So yeah, probably just a matter of waiting until around the end of this game's first year...
I wish someone would rip the models from this game to get more use out of them, but seeing as how even the models from Miracle Mask still haven't been ripped yet, I guess that probably won't be happening anytime soon...
Yeah it would do well to start involving the DLC characters into these spirit battles as well eventually, once all is said and done (assuming they've got no plans for any future passes) we'd be reaching 12 DLC characters by that point, would be a shame to let all that potential fly....
By the way, depending on your current timezone, today is the Layton series 13th anniversary, so a happy birthday to the Layton series!