Super isn't doing Buu justice. It's not doing Vegeta justice, either, IMO.
More people know of GT than Super, even though GT is shit. You're not going to have these newly introduced characters in Japan in the game because the west don't know about them. We'd be lucky to get Black and/or Zamasu. Anything beyond that episode-wise is simply a no-go zone right now. Beerus, sure. He's great. Whis isn't much of a fighter, so he's out.
I guess you're right for Buu. Even though he got a cool episode.
And you're flat out wrong for Vegeta.
As for the rest, lol. You're vastly underestimating how much money Super is making. Also, when has "the west" ever mattered when it came down to DBZ rosters ?
On top of that, there are official channels to watch it in simulcast, so the west already has seen all those characters. You really think they're targeting the random casual fan that watched DBZ 15 years ago with this game ? They could have done that with the very casual friendly Xenoverse games and even them are filled with Super content.
And what does "the west" even mean ? The USA airs DBS weekly and is a slog since they started so late, other countries (asia and I think some latina areas) started it way earlier so they could get away with one episode per week, Europe aired episodes daily so they're far ahead.
If you think they're ever gonna consider casual american audience before hardcore fans + Europe + Japan, I think you're delusional.
Everyone agrees the Super 17 saga was trash.
I'd also argue about characterization. If anything, Super flanderizes a number of characters just to fit them back into their trope. Vegeta is back to being focused on being stronger than Kakarot. Goku is an overly-irresponsible moron who hasn't kissed his wife. Videl exists to pop out Pan. Buu has lost any development he may have undergone in DBZ.
GT wasn't great with characters, but there was some development at least, like Vegeta getting over his petty rivalry and becoming more of a family man etc.
Pointless argument anyway - you're right. Super is more popular, Super is more deserving of entries in this game and Super will undoubtedly get them ahead of anything outside DBZ. That said, ragging on GT for things that exist in the series as a whole is a meme and there will likely be inclusions from GT in this game also.
That's not exactly true though.
Gohan, Krilin, 18, 17, and Vegeta all got a lot of development. Then you have Roshi that also grew out of his perversion. The other characters didn't really need a lot of change.
The one character that is really obnoxious is Goku.
But let's look at your examples.
- Vegeta in End of Z still sees Goku as a rival. On top of that, in Super, he is a family man. And it's been made very clear this arc, when he refused to go train with Goku to stay near Bulma's side for Bra's birth. He's fighting for his family now.
- Goku left his entire family behind to go train Uub for years even though he has instant transmission.......... Talk about fucking irresponsible or how he loved his wife heh.
Buu hasn't lost any development, he loves Satan and behaves correctly in society, how is that lost ? But I agree Buu seems to get the shaft a lot in Super. (and Tien shin han)
As for Videl, do you remember how traumatic her encounter with Spopovitch was ? That pretty much made her give up fighting, and that's understandable.