Continuing with my look through Serebii's articles:
Mega Pokemon: So, you only get the Starter's Mega Stones right before you face Giovanni in the Viridian Gym while the rest are post game; you get Mewtwo's from Green after beating her in Cerulean Cave (after catching Mewtwo) and the rest are just sold to you by some guy in the Pokemon League...
LAME.
Like, WOW, Mega Evolutions were really shoved in last second, weren't they? What gets me is that they advertised the Mega Evolutions were in the game... yet it's only the Starters at the very end and the rest are post game. It feels like they were kind of hoping tricking players into buying the game thinking this would be a neat opportunity to use some of the Kanto Mega Pokemon they wouldn't normally use during main game. BUT NOPE! You thought you'd finally get to try out Mega Beedrill or Pidgeot for once? HA! What part of 1-to-1 remake of Yellow didn't you get? They didn't even give Pinsir any Flying-type moves making it becoming part Flying-type a downgrade.
New Sprites: So a lot of the final stages were given new bigger and more detailed menu sprites. I really like them, but I have to say it feels kind of lazy they didn't do it with all the Pokemon. And they didn't hide it either, there's a VERY obvious art difference between the new sprites and old sprites and its rather jarring. I think its that the new sprites have a thicker outline, it makes the colors look brighter and bolder. Also it seems rather random which Pokemon got new sprites, like at first it looks like they chose the Pokemon who's final evo is much larger than their previous stages yet Fearow, Jigglypuff, Persian, Parasect, Magneton, Muk, Electrode, Weezing, and Seadra didn't get new sprites. Heck, I'd argue even some prevos should get bigger ones like Haunter and Dragonair. Infact, why not do new sprites for all the Pokemon? There's only 153 (plus some Alolan Forms) you need to do! They didn't even include the sprites for the Mega Pokemon, instead they just had the Key Stone icon next to a Pokemon if it could Mega Evolve!
Rare Spawns: Odd they allow you to catch multiple of the Legendary Birds yet there's only one Mewtwo. Also odd they just let you catch wild Charizards but not the others, you have to evolve them from their basic stage.
Clothes: There's something about the Clothes which confuse me. Now for
your Starter it makes sense that Pikachu gets the Raichu clothes and Eevee gets all the Eeveelution clothes. But why does only the boy get the Raichu set and the girl get the Eeveelution clothes? It feels like the only reason they did it because they just felt like they had to have some gender exclusive clothing and to continue the tradition of the girl getting more clothing options then the boy.