>>34930398I've played Platinum not long ago and I'm quite shocked how different it is from other "expansions". Here is my answer:
>very good move availability You get Return at the beginning and Earthquake after Gardenia. Also, you can learn elemental punches mid game.
>bigger PokedexYou can get many more Sinnoh Pokemon before E4 (mainly cross-gen evolutions). Even some non-Sinnoh Pokemon make appearance to make your adventure more interesting.
>better difficultyDP has alright difficulty until you reach Volkner (when suddenly everything is on higher level than it should be). League is pure bullshit and Repels are useless against wild Pokemon. Platinum fixed this problem (however it fucked the beginning up with retarded early battles like Purugly and Skuntank).
>faster gameplayEven though health bars still take a while to deplete, battles are visibly faster.
>appealing graphicsAdded background to locations' names. Many changes to a lot places. All of them make Sinnoh more alive and unique.
>additional contentDistortion World is interesting. Looker is a cool character. WiFi Plaza... looked nice on the video I saw.
Emerald did almost jack shit compared to this list. Battlers got a hefty amount of additional content (Battle Tents, Battle Frontier, rematches with leaders, more frequent double battles) but others got shafted. Better font, slightly changed story... an access to 3 new locations I guess.