I have a feeling that the roster is closer to 30 and may surpass 30. Now none of this is confirmation and I'm not trying to say it is fact. Here is why I think the roster is closer or more than 30.
The leaked picture of Yorda.
The twitter confirmation of David Hayter and I heard that there is a picture of Hayter with Elding and it would make sense for Big Boss/Snake to be in and Colonel Campell to be the minion. Since Raiden has Sam already. I doubt Snake would be one as well.
The big foot blurry picture of "Kat" either way that character looks nothing like the characters leaked or confirmed.
Resistance having its own stage and a couple of items I doubt that Nathan Hale/Chimera didn't make it in to the game.
20+ can just be a fail safe number and there has been time since its pre-E3 announcement to develop characters into the game.
Omar apparently being quoted saying the roster is "bigger than you think."
An interview where Omar was asked if there are characters that they wanted in but could not get because of licensing and he said "So far so good, the developers know how important this game is."
Of course to counter all of this there are plenty of reasons why the roster will be less than 30. Paul Gale saying that he thinks it is less than 30. However, he only knew of 18 for sure and we already have 20 and he uses phrases likes "the vibe i'm getting". So he does know alot but doesn't know everything. Tell me what you guys think and if this is beaten to death sorry I just got on this and wanted to partcipate.
Your reasons are valid. Paul did say he knew of 18 before he learned the entire roster. Then he said he learned of "several" more characters. Bad thing is...several is vague to meaning it could mean as little as 3 or as much 6-8. I guess well have to wait and see. I think the roster has a total of 26 characters, but thats just my guess.
Plus the confidence that they have to say "yes this leak happened but there is still more" either is them trying to suck it up and put on a smile or it means we really do have a lot more to show you guys. And there are plenty of places to reveal more characters. We already know 3-4 reveals at Gamescom. We also have TGS, BGS, and EB Expo that they are already scheduled to be at. Still possible but unlikely PAX and NY Comic-Con. But if we have 3-4 at Gamescom and 2-4 at the other 3 we will have between 24-30 characters. So I think we are in better shape than people are thinking even if we can't get some of the characters we want we will still have a great size roster of diverse playstyles
Paul Gale learned of the "several more" as of E3 right? They just said today that the game has changed a lot of that they have added quite a bit (characters), so think about it, maybe paul gale ONLY knew about the characters confirmed, and the characters leaked, and maybe theyve added quite a few more, could very well put it over 30.