I wish people would be careful about speaking of filler sagas. We don't have confirmation of that yet.
Where is all this coming from? The BW2 games have Kanto Pokemon and gymleaders as well as other gymleaders as well. Just because of that doesn't mean Ash's old Pokemon and Misty needs to show up again. Besides, Ash went to Kanto already back in BF. All of the Kanto Pokemon has been shown a bunch of times. There is no need for it again.
Well to be honest he said he only thought of it as a 0.01% chance, only if Iris doesn't tag along...
True, we don't have confirmation, but we have confirmation about the league happening relatively soon. How are you gonna justify the amount of time required to bridge the gap between the end of the league and a new series?
Answer to all the bad things in the world: Give up on trying to make everything better. Hence, accepting it for what it is. YOLO! <- Click the link and daw.. -.-
"If I had my way in DP, Ash would've hit the league with: Pikachu, Ambipom (his to keep), Torterra (Grass/Starter), Lucario (Ace), Chingling (Cute), Bidoof (Water-type) and Heatran (Fire-type)."
Spoiler:- GenVII Starter names speculation:
I want to get credit for if they turn out true. Dated 1:54am on 6-6-16:
- Rowlet: Arrowl - LOL I WAS WRONG!
- Litten: Burstiger - LOL I WAS WRONG!
- Popplio: Bubblaid - LOL I WAS WRONG!
The second line is meant to be sarcastic.. Though there was a random trainer with a Heatran at the Sinnoh League..