Careful, people. We shouldn't be so quick to assume things. Newcomers aren't chosen just for "representation", so who would "represent" Sword & Shield best is beside the point. The Galar starters
could do some unique things, it's just that we believe Zacian and/or Zamazenta would be
more unique and more interesting to play as because of that. And we've had several past newcomers get chosen for their uniqueness, so it's worth accounting for.
It's great you think that, but them being the last dlc characters might be too much. If they want another Byleth situation that's on them, but we really don't believe they'd make that mistake again (nor do we want that).
On one hand, calling Byleth a "mistake" is...missing the point. Newcomer speculation lately has been looking for the wrong things, viewing characters more as a means to an end of creating more crossovers. Byleth was chosen for being relevant at the right time and being able to do things no other fighter could (and because according to Sakurai, having someone
very new next to all the older characters helps keep things fresh). Many other characters in the past have been chosen for similar reasons, but because hardcore speculators have started only caring about star power and collecting famous icons, they saw something that has
always been Smash's M.O. and saw it as a betrayal.
But here's the thing: There wasn't as much backlash
outside our niche of the Smash community (or gaming as a whole). In fact, Byleth was and continues to be one of the most common DLC characters I've run across online, second only to Joker (who is top tier competitively and inherently common because of that) and Steve (who is the newest character). If Sakurai is trying to make DLC fighters appealing to play
as, then it seems Byleth actually succeeded at that!
Which is important for us, because while I don't think a SwSh character would fill the same niche as Byleth for Pass 2 (since the games will be over 2 years old by the time Fighter #11 is out and they'll want someone more recent for the niche), I
do think a Pokémon character is likely for the
other reasons Byleth was chosen: being relevant at the right time and having the potential to do something no other character can.
The fact that Gen 8 alone has so
many viable options (even if narrowed down to just the most prominent mons) and happens to be from one of Nintendo's biggest franchises (so the "literally who" factor would absolutely
not be there) helps even further!