The announcement of Tatsunoko vs. Capcom getting released stateside got me thinking about what other Tatsunoko properties there are that could have been included, or might be included in a future version.  This is of course limited to titles with characters that "make sense", ie. having a mech from Evangelion wouldn't make much sense, beyond a boss fight, for example.  Here's what I came up with:

Daigo Otaki /Gordian from Gordian the Warrior -  Something done with the different robots could be unique.

Stick Bernard or Yellow Belmot from Genesis Climber Mospeada - wearing the cycle armor of course.

Princess Kahm from Outlanders - man, it's been a while since I watched this.

Shurato or Gai from Shurato (Tenkū Senki Shurato)  - you could make a whole fighting game on this series by itself.

Gawl from Generator Gawl

Kyosuke Date from The SoulTaker

Anyone have some other suggestions?  This is ignoring any licensing rights issues of course.  These are all series I am more familiar with so it would be interesting to here about some characters from titles I haven't seen . . .