To Be Honest, I like Wallace's New Design!
WHY NO JUAN?!?!?!? ;--;
Because they are following the original Ruby & Sapphire and not Emerald. It's also why Team Magma is battled in Omega Ruby while Team Aqua is battled in Alpha Sapphire. In Emerald both teams were battled at once, and that's not the case with these remakes.
Also, Steven is Champion so that's why Wallace is 8th Gym, because it was that way in Ruby & Sapphire and not Emerald.