Ash will probably get Crabrawler which has Water type moves and will evolve into an Ice type too so will have triple type advantage of Fighting, Water and Ice in it's arsenal which can only be a good thing.
I think a good moveset for Goodra will be: -
Power Whip for a physical attack and he could use Muddy Water to propel himself across the battlefield and heal himself using his Hydration ability?
So you're basically saying that it goes like this: - Supersonic - Hyper Voice - Boomburst? So it could the best of both worlds and have Noiba's Supersonic upgraded to Hyper Voice before it's evolution to Novern where it will be upgraded to Boomburst? Then it will have an upgraded moveset of: -...
I think Ash will have this team going into the League: -
Then Ash should have the following 6 as his back-up team for the League: -
Bayleef - Could Evolve
Quilava - Could Evolve
Totodile - Should Evolve
Corphish - Should Evolve...
The ones I would bring back for the League are as follows (including reasons why): -
Goodra - Hopefully on a permanent basis after he's spent a good amount of time with his friends.
Boldore - To evolve and get a good win or 2.
Corphish - To evolve here or in a Post-League arc.
Bayleef - Needs a...
I predict that Ash will catch a Litleo (M) and a Skiddo before the last 2 Gyms and Goodra coming back for the League. I also think that Ash will send Goodra, Hawlucha and Talonflame to Oak's Post League and continue in a Filler Arc with Pikachu, Frogadier/Greninja, Noibat, Litleo (M) AND Skiddo...
Probably Goodra for the League and possible stay on the team as well but maybe's for a filler saga, the others (Butterfree, Pidgeot and Lapras) could be part of a flock/pod of wild Mon's that are rounded up by Team Flare to try and cause trouble as a distraction for the bigger plot? That way Ash...