While it is undoubtedly true that Roy has most purest fans due his former clone status and other reasons to make bandwagoning inexistent, I believe most fans out there supporting some popular characters are quite try-and-true fans as well like us. These characters have their own charm and fans that have grown with them, as well.
While they have say, more bigger number of people in their fanbase, they are basically in a complete uncertainty when it comes to adding their own wanted character by Smash-team. And now it's all up to their ballot votes as their only ways to raise their voices on Sakurai's hearing.
Compare to us, who right now
(even if hanging by it) have a measly sound file leak as a lucky charm that gave us a head start by many leaps into a more certain confirmation.
I think that these other fanbases will really struggle to get whoever they want in Smash and just has to stick together. I quite tend to root for them, not to mention I have some characters that have chance only via Ballot. I think we can really talk about bandwagoning if the characters have easy ways to get in Smash by a glance and people not before then has shown up to support them out of nowhere.
Obviously though, Roy is constantly looked down upon in Smash-community in many abashed an exaggerated ways, which makes the sound leak be our only glimmering light at the end of the tunnel in Roy's long history of absence and easy ridiculing on his expense on the way.
Still, I think saying they are "bandwagoning" is too early - as it is so up in the air so far who might be leading right now in the ballot, and who will be chosen in the end. I persoally want all very beloved and highly requested in along with Roy, and much more. This is still a once-in-a-lifetime chance to let each of fanbases raise their voice, anyway.
On the other hand, the Non-Nintendo 3rd parties/indie developers promoting their characters for Smash Ballot... now that's trying to bandwagon people, honestly.
I quite do wonder about this as well. We gotta also keep our attention on the upcoming update in order to see if the sound files have stayed there.
I really hope he makes his trailer the epitome of triumph. I really want people to finally rekindle interest on Roy, essentially rewriting his history in Smash-series from an infamously hated clone to one of the more beloved and coolest characters in Smash by his vigorous fighting spirit, amazing rush-down moveset similar to PM's and finally just look absolutely cool during fighting while still showing sings of youth. That'd make him for me so much.
EDIT:
Announced via Nintendo of America's Twitter, Masahiro Sakurai will host a video presentation about Super Smash Bros at E3 2015 on June 14th, 7:40 am PT. Nintendo says Sakurai will be outlining the details of Lucas’ inclusion in Smash Bros., the new Miiverse stage on Wii U, and Mii Fighter costumes inspired by Splatoon.
Guys, I think this could hint Roy in a way or another. Better dig in when it comes.
Hyyypppeeeee~~