So what?
Castlevania was also featured in an animated show, produced with the help of Nintendo of America of all people:
Laugh at the show all you want, it's stupid, it's weird, and it's blatant advertisement.............and it worked.
I have seen people that have never played Castlevania, but know it thanks to this tv Show.
Same for the Netflix show, which WILL feature Simon Belmont eventually (it may be even sooner depending if they skip Christopher Belmont's story or not)
Is this a reason to inlcude Simon? No, but it helps him and his series to get exposure, namely in the west, which is something that
Goemon doesn't have, and you haven't try to debunk this argument, rather you just dance around it.
Literally every third party in Smash has proper western exposure. Mega Man, Ryu, Cloud, Pac-Man, Snake, Sonic (who was made specifically for western audiences in mind) and even Bayo.
Also every single character you mentioned outside of Roy (who was a last minute addition from a Nintendo franchise, so that doesn't really help your argument) has also localized games and western exposure, so i fail to see how does this help Goemon. Not to mention, is Goemon the 4th selling Konami franchise? Did Sakurai stated that Goemon had a Big Impact on him? Did the Goemon Franchise helped define the MetroidVANIA genre?
To me, it comes across as you liking something over other thing, and you use use your tastes and preferences instead of actual arguments to help your cause.
If you prefer Goemon, fine, i'll understand that not everyone likes Simon Belmont, but when it comes to using actual arguments and reasoning, Simon Belmont is just the better choice overall (Heavily profilic franchise, most prominent character of the most prominent clan of the series A.K.A the Belmont Clan, PROPER Western expousre, etc)
No hard feelings and no harm was intended towards you, it's just that im very passionate about Castlevania, and i don't like it when people put their feelings over the facts, namely the ones that i heavily repeated over and over.