Two loose ends that have always been Johto related was Ash meeting Ho-oh in some form and the GS ball. Likely the writers gave up on the GS ball ages ago, but do you think its possible they could finally bring closure to it if GS remakes happen and the writers have to advertise that region again? These are the same writers that brought up the Thunderstone from Nurse Joy in DP, after nearly 500 episodes, so who knows.
Likewise a lot of people are speculating about the possibility of Ho-oh being featured in Movie 13, since that movie would happen after Sinnoh is over yet prior to any 5th gen region. While a 5th gen legend may be in the movie too, (they usually do this like Latios/Latias in the 5th, and Manaphy in the 9th), it could give Ho-oh the movie it never got.
Those possible GS remakes may have a positive impact on the anime, give or take.
Likewise a lot of people are speculating about the possibility of Ho-oh being featured in Movie 13, since that movie would happen after Sinnoh is over yet prior to any 5th gen region. While a 5th gen legend may be in the movie too, (they usually do this like Latios/Latias in the 5th, and Manaphy in the 9th), it could give Ho-oh the movie it never got.
Those possible GS remakes may have a positive impact on the anime, give or take.