The dub is going to air in the US with a less than 3 month break when we're going to the breaks that Japan has recently (counting that the dub airs the episode each week with no interruptions). The dub could have a break of like 80 ndays when the XY anime came out. That's less than three months. Not a lot, yeah.
The problem is that we have is that the anime promotes the games. And if the series is released in Japan when the games are released, the series will start just after Christmas. This is bad marketing. The agames need special promotion of the anime isn two dates: At game release and in Christmas time.
The solution that I see is airing the new anime in Japan before the games are released in September. The dub will continue into Episode N, when the games are released they air a sneak peek, continue to Episode N and they air the new anime since Episode 1 in Christmas.
And about VA, this is easy. The dub dubs episode before the anime airs in the original now. I think of a case where Trip's VA is voicing a battle almost 2 months before the episode aired... in Japan. Remember that now, TPCi works closely with Japan to dub the episodes at minimum time possible, sometimes with the episodes recently completed and way months before the episode aired.
And I think that there are like 12 episodes ready to air in Japan with the production completed, specially with TV Tokyo recent breaks. I feel so.