There should be 5th gen because i remember hearing that Pokemon might go on forever,but I don't think Ash should go on forever.
so they introduce 5th gen in movie 12 but don't elaborate on it too much until the new games are created and then the anime would take place 10 or so years in the future without Ash, maybe his son, cousin, or a completely random person. the only reason i would think they'd follow a relative of Ash's would be so he could make cameos and reference events from long ago
If it will not be ash mabe it will go back in time for his fathers journey?
That Dialga thing does sound interesting. If we were ever to see anything of his father, he'd have his face shadowed, and probably his voice unheard.
He would need to catch Dialga to do that, and we all know that isn't happening anytime soon.
Just like DBZ, Pokemon has what I call the infinite formula, it can just keep going and going. It can also just stop whenever it wants.
Personally I think if they do another season with 5th gen, which they will no doubt do, that they should drop Ash. When I first heard about D/P I had heard that Ash wasn't in it, though this proved to be false annoyingly. I mean it's not like Ash isn't an okay character, but after being around him so long its gotten fairly easy to predict his reactions to things. The first season was the best for Ash because more often then no he was the underdog and we saw him go through his many trials in order to become a strong trainer. Now we are there and wondering what to do. Maybe in the next gen they could make Ash an enigmatic figure, only seeing brief shadows of him or extremely subtle hints of his presence. Then in the dramatic conclusion the new hero would fight Ash in a battle of the ages! That and how many times is Pikachu going be de-leveled from elite four level to first gym level?