Gou is left handed, meaning he is automatically the best character. #leftiesunite
Dogasu handily summarised some of animedia interviews:
https://twitter.com/DogasusBackpack/status/1193095004891185152
- Apart from being left handed, Gou is meant to be a city boy with a pretty face who assesses the situation more calmly, in contrast to Ash being from the sticks and acting impulsively (so already, you can see conflict arising from this simple personality clash).
- Gou doesn't mind travelling alone. He also has a "bit of an ego", and the team are being careful not to have him come across as unlikeable.
- Dr. Sakuragi has an almost childish enthusiasm for research, which can embarrass Koharu.
- Rica Matsumoto was directed to play Ash "a bit younger" in Sun and Moon, but hasn't received such direction this time around. So perhaps there'll be less excitable screaming from Ash this time around.
- It seems there'll be a smaller cast, if only because the recording booth was crowded during SM and apparently it can get really hot in there.
- The most interesting part: Pokemon 2019 will have more self-contained stories and fewer two-parters and multi-episode arcs due to its new timeslot. As people tend to go out with family/friends on Sundays, they don't necessarily have the time to stay at home and watch every episode. To that end, this new series may be designed so that people can jump in with any episode. The episode titles released so far suggest this will be the case as well.
The last part sound goods to me, because Pokemon has always been excellent at telling self-contained stories. It has been by far its biggest strength as a show. Meanwhile, the longer-form story-telling has always been inconsistent. So I'm all for Pokemon playing to its strengths.
I speculated before about the new director and writers taking the series in a more character-driven direction, just based on their previous work. I think this format will help with that
I don't think we should assume this means the death of all arcs, either. There can still be character arcs; you just might not get a 13-episode epic like the Aether arc in SM or a huge multi-episode finale like the Alola League or the Team Flare arc.