>>58738172I don't think it's that. If anything, I'm sure they expected her to be at least decently well liked if not exactly as popular as she is. She appears enough and has enough interactions with other major characters that I think Game Freak isn't surprised that people like Gwynn if they're paying any attention.
The real answer is the simplest one: they're lazy. Ivor's costume adds muscle definition to the player's arm iirc, meanwhile look at shit like this
>>58737053 if you wanna see how little they cared about whether or not the outfits actually work on the player models. The outfits are all handled like shit.
If they truly gave a fuck, we'd have outfits for the sub leaders as well as Gwynn, but they'd probably not want it to look like favoritism by giving her outfit out but leaving the others high and dry. That said, even if they had enough bias towards her that they wanted to give her outfit away, I'd still expect them to be too lazy to do it on top of the other 5 they did give out.