Here's one I've always thought should happen since for some reason Torterra is missing 10 BST compared to some other starters. Torterra
Grass/Ground
Overgrow/(Shell Armour)
HP: 95 -> 100
Atk: 109
Def: 105
Sp.Atk: 75
Sp.Def: 85 -> 90
Speed: 56
BST: 525 -> 535
New Moves: Shell Smash (This is like blastoise all over again why doesn't it have it????), Shore Up (To give it an option for recovery on sand teams)
With these slight stat adjustments suddenly Torterra looks a good sight more healthy, with the addition of Shellsmash to go on the offensive after just one turn of set up and being healthy enough to take a few hits it would be a truly threatening and versatile Pokemon capable of defensive sets using sub/seed or offensive with Curse/Shell Smash.