They could do a spinoff series where we can follow May in Johto
Much as I like Pokemon Contests I don't think I can stomach a full season (26 episodes) of them exclusively in their current format. Since I am interested in Contests I wanted them to expand on the concept more or at least make it follow how it's done in the games more closely. How scoring is done is pretty much strictly up to speculation or however the writers decide to score a certain routine or move in the battle portion. Pokeblock, Poffins, and Berries despite being discussed a lot seem to do nothing. The Contest format in Hoenn and Sinnoh is different but the Rounds and even the Round Order in Sinnoh is the same. Even dressing up seems to be optional (Ash didn't in the very first Sinnoh Contest).
I can see why people could be turned off by the concept of Contests. In the anime they're gussied up Pokemon Battles that follow a pretty predictable formula. Attacks, Typing, and Trainer Skill don't come into play as often as they should. It can be a lot better then it is now if they reworked the idea a little the next time around.
Besides that I wonder if May has enough " Star Power " to hold a few specials or even a spinoff by herself. What would she do in terms of a cutesy mascot Pokemon now that the majority of her Team is evolved (Munchlax?). Would she be traveling with people or will she go it alone? Trainers did both in Pokemon Chronicles.
Guess I should answer the original topic question now. It's still along those lines. I want them to follow the Contest / Battle Frontier format closer to what it is in the games. Rather then have Ash just battle like he always does against Gym Leaders he should ...
Battle Factory: Get a random set of 3 against Thorton's random 3. When he wins he'll get to keep one of his three Pokemon as a prize along with his symbol (will be his mandatory " catch " for the Region).
Battle Tower: Standard 3 on 3 match. Will be saved for last since it's revealed that Palmer is Barry's daddy, or something.
Battle Castle: I'm actually not too sure. Maybe he can battle both the Butler and the Lady due to some anime-only twist.
Battle Arcade: Set of 3. In the beginning and after each Pokemon is KOed the Roulette is spun to add a random condition.
Battle Hall: Ash uses one (neglected) Pokemon to take on Argenta.
I'd also like to see a twist for the inevitable Johto Super Contests ... possibly one that May warns Dawn about before she heads into that region.