It would be pretty cool as you said if the tournament was for SCVI at Gamescom. Imagine the applause it'd get at the reveal if it went something like this:
"Now, onto our next game. We know it's been a while since we've shown anything regarding one of your favorite fighting games, but here we are today to present something we've been working on for a long time. Something that wouldn't have been possible without your help! We asked you to choose who your favorite fighter was last year to determine the best possible roster, and then we asked again to determine who you wanted to see most, all of it was leading up to this. The two finalists of the tournament are here to determine whose soul burns brighter. Without further ado, I present to you the new Soulcalibur!"
The crowd cheers
The screen behind the presenter shows Siegfried and Taki in enhanced Unreal Engine graphics, both the stage and the characters show stunning detail in their new costumes in a cathedral stage similar to the one in the background. They do their intros with each other:
"Stand aside, or die. That is your choice." - Siegfried
"Don't take any of this personally." - Taki
Then they engage in battle. The fight is close, each showing off new moves and their critical edges. After a hard-fought match, Taki is the winner. She does her outro:
"You fought well. Now, onto my next objective! *does the teleportation spell and disappears*"
The screen turns black, before a logo shoots on to the screen with the announcer proudly yelling "Soulcalibur VI!" and then text follows saying "Coming 2017".
The crowd goes wild, and gamers do too.