As Team Four if we want to win this, we want our rom to stand out, I propose changing the game's starting level for most Pokemon to be around level 60-80. Drastic I know, but here's some reasoning;
1). You're already an ace trainer at a battle tournament league something, so your team is probably pretty strong.
2). Level grinding could be cut down, no one likes level grinding, we've all played a million pokemon game files I assume. At 70 for example that basically puts the level cap at 30.
3). It's a Battle Park island type of thingwhich were unlocked at the end of the game, after you have a nice team; The sevii islands, had lv35-40 wild, and trainers were lv 55 with the vs seeker. The Battle Park in Emerald had wild smeargle, around 30-40 if I remember right. The Battle Frontier in Platinum had lv 50-54 Rhydon and Hippowdon (and lv25 Diglett).
Now, this doesnt mean all of the Pokemon would be fully evolved, I could change what level moves are learned, and at what level evolution happens.
Also, I would like to change Base Stat Totals of Pokemon, I wouldn't mess with the curve, I would just like to even out some BST's so that there are no inherently bad Pokemon, for example starters would fo from 314 to 400, and pokemon like Ariados would go from 390 to 600. It would overall balance things a bit and make more and would give lower evos and many Pokemon that have unfortunately low BST's a better chance in battle, some people may not like the fully evolved form as much as the secondary form for some species, and I think they should be able to bring like Wartortle or something into the battle park, without having to worry as much about how much more efficient it would be to bring a Blastoise.
Also, at higher levels, moves like bubble and scratch, don't do much, like not much at all, I could do a general slight buff to help moves with lower base power not take up too much time in battles.
I understand this is all kind of out there, feel free to disagree with it, just be honest and lets make progress.
I like the order of events so far, the trainer has his/her tournament team, helping develop the character a little more for people, then the team is taken, giving the fresh start and allowing players to start building their own team, starting from the present.
EDIT: this all, of course, depends on wether or not we use this story.