He has an electric final Smash, a placeholder entry replacement, different Walk animations, one changed victory pose, a new lose pose, 2 different taunts, ported graphics, separate voice files(in the same soundbank as Mario), and some more differences. As for the actual moveset and stats, he's been reworked to be Mario's answer to Melee Captain Falcon's Ganondorf. In other words, he's been changed to be a slower, but stronger Mario, as was originally intended. IIRC, I slowed most non-jab attacks to take 120% of the original time, but are 1.2 times as strong. For example, an attack that did 10 damage as Mario would do 12 as Doc. Also, his actual movement stats have been changed to be a bit heavier than Mario, and while he is slower than Mario on the ground, he beat's Mario's air speed by a good measure. His pills have been changed to be smaller, but hit harder in exchange for the decrease in hitbox size. His Doc Jump Punch no longer makes coins come out of the opponent, and works differently. While it has a sweetspot in a very similar fashion to Luigi's version, Doc's one moves in a way that travels further horizontally than either of the Mario Bros. versions. Also, the sweetspot does damage witgh the light element, and Doc's mobility in special fall after the move is somewhere in between Mario and Luigi's. Alongside Doc, I'm considering releasing a companion edit for Mario, which would give Mario the Star Spin GFX from older PM versions(to differentiate Doc and Mario's spin visuals), and set his weight to 98(the same as PAL Melee's, emphasizes the difference between Doc and Mario's stats slightly).