I may be the only one that think it may be a good idea. I mean sure it's disappointing this ended with no announcement (sick tournament btw), but i mean when Tekken was struggling they did same by announcing characters during SF5 finals if i remember well.
Tekken 7 finals will be on Sunday last game before Smash, all Tekken fans (there are quite a bit) will be there obviously, SC fans (even those who don't like much Tekken) will also tune for the reveal, and Smash fans because they will be waiting their game that will start right after Tekken (and there are quite a LOOOOOOOOOT of them).
This will bring more eyes on Cassandra, and Soul Calibur as a whole when you think about it.
And that would be even more dope if they'll have more things to reveal.