Not to be mean or anything but after giving it some thought, I think we're good with the 29 characters we have. It's already clear that Team NINJA does listen to what the fans want. It's just that there are more people asking for costumes, characters and stages than frame advantage, unholdable stuns and reduced thresholds. But in the three months we have, we should be asking for general and character-specific gameplay changes. This strongest army in the world thing worked for Leon and now Cow wants to move people for Tengu. In all honesty I think it's more important for the gameplay changes to happen instead of the return of a character that only five or so people here on FSD will use.
I'm seriously not trying to antagonize Forlorn or any of Tengu's fans because I actually understand how worried and pissed you must be about the loss of your main, but we have to understand that DOA5's issues go beyond the presence of a character nobody uses anyway. Fixing DOA5's gameplay is much easier than we realize. It's just a matter of changing frame data and reducing the ridiculous stun threshold and Team NINJA should focus on that.
We got the costumes, we got new stages, Ein and Leon are back, Rachel and Momiji are more than welcome, just like Jacky and we'll all remember Tengu for how cool he was (if he's not in already). But now is the time to carpet bombs Facebook and Twitter asking for 3.1's stun system, frame advantage on block, better sidesteps, better ground game and things like that.