Sorry if this is a lot,have a lot of ideas and nitpicks about the game.
1.Give the elite four teams of at least 5.Replace Caitlin's Musharna with a Gallade to make it more interesting.
2.Make Wooper and Quagsire available in the wild.Buff Quagsire's physical defense to 115 and its Special stats to 80.Buff Wooper's stats to 65 HP,55 Atk and Def,and 45 in its Special stats.
3.A bunch of World Tournament stuff.I'll focus on the World Leaders Tournament here.
Gen 1
Brock
1.Replace Onix with a Steelix with the same moveset and holding a Metal Coat
2.Replace Sandstorm on now Steelix with Stealth Rock.
3.Replace Choice Scarf on Aerodactyl with Expert Belt and replace Expert Belt on Rhyperior with Leftovers.
Misty
1.Replace Choice Scarf on Starmie with Expert Belt.
2.Replace Sheer Cold with Hail,Ice Shard with Psychic,and Zoom Lens with Expert Belt on Lapras.
3.Replace Rain Dance with Ice Beam and Focus Sash with Leftovers on Quagsire.
4.Swap Blastoise's position with Lanturn's and replace Outrage with Rain Dance.
Lt.Surge
1.Replace Double Team on Electrode with Self Destruct.
2.Replace Jolteon with Rotom-Mow,using Thunder Wave,Hex,Discharge,and Dark Pulse.
Erika
1.Replace Vileplume(SD Vileplume with a non-STAB move and 2 status moves.very smart)with Jumpluff,using Stun Spore,U-Turn,Giga Drain,and Protect with Leftovers.
Sabrina
1.Replace Slowking with Slowbro holding Leftovers.
Blaine
1.Replace Overheat on Arcanine with Flare Blitz and Focus Sash with Shuca Berry.
2.Replace Flareon with Houndoom,using Sunny Day,Flamethrower,Sucker Punch,and Solar Beam holding a Heat Rock.
Gen 2
Falkner
1.Replace Confuse Ray on Crobat with Cross Poison.
2.Replace Stored Power on Xatu with Thunder Wave.
Bugsy
1.Replace Guillotine on Pinsir with Brick Break
Whitney
1.Replace Tauros with Bibarel using Ice Beam,Scald,Hyper Beam,and Toxic and holding a Life Orb.
2.Replace Ursaring with Slaking,using Chip Away,Toxic,Slack Off,and Aerial Ace and holding a Chople Berry.
Chuck
1.Replace Hitmonchan with Breloom using Leech Seed,Seed Bomb,Sky Uppercut,and Stun Spore holding a Lum Berry.
Jasmine
1.Replace Mirror Coat on Magnezone with Light Screen.
2.Replace Iron Ball on Forretress with Occa Berry.
3.Replace Stealth Rock on Skarmory with U-Turn.
Pryce
1.Replace Lovely Kiss with Hail on Jynx.
2.Replace Dive and Sheer Cold with Surf and Ice Beam on Dewgong.
Claire
1.Replace Double Team on Altaria with Dragon Dance.
Gen 3
Wattson
1.Replace Bulldoze with Screech on Ampharos
2.Replace Swagger on Raichu with Fake Out.
Flannery
1.Replace Fissure on Camerupt with Substitute.
WIP