On one hand I can't see them doing this as they've already done this before and is basically retreading old ground which they kinda re-treaded with Kale.
On the other hand I can totally see them doing this simply to make Broly canon to the regular timeline and build on this character that can bullshit his way in keeping up with Goku and Vegeta rather than create an original Saiyan or other character.
Super Dragon Ball Heroes will be playable at the San Diego Comic-Con for the Dragon Ball World Tour. Yes it's in English and so are the cards. This is the first time the game will be out of Japan. Keep in mind it's a demo and the North American release is undecided.