I thought I was alone in thinking that emerald was superior. I just got to the game myself and 50 hours in, just an hour or two after beating the elite four and exploring some of the additional content I felt very underwhelmed. It's nice that they mixed the types up a bit, going out of their way to counter the obvious type counters for their roster (ie logic defying surfs and earthquakes) but the end it was still way too familiar a formula for me to give this the credit it seemed to have wanted by changing only in aesthetics alone (by the way thanks for adding load times to areas who's sole purpose for existing was to showcase alternate viewing angles).
My initial Elite Four group was...
Samurott - Balanced stats overall. Grass Knot and X-Scissor proved to be very useful.
Scrafty - Shed skin seems to benefit single play more than online play, which worked out great for me.
Sigilyph - Crazy speed, decent evs, hidden power: dragon. Very situational. Sure, she was my second hardest hitter, but she cannot compete with my next one.
Darmanitan - Crazy speed, does 3/4 damage to fire resist pokemon with flare blitz.... what a champ. Sheer Force and Life orb stacking on flare blitz has to be the single most powerful non legendary attack in the game.
Fraxure - basically canon fodder to keep the other pokemon up. It was much too slow to compete the first time around.
Larvesta - Exp leech. It wasn't until it got to about lvl 52 that I realized you could just catch a volcarona post elite four round 1 at that sand resort place. I feel like I wasted my time since I raised that Larvesta since lvl 1 and it was never good enough to hold it's own in battle with it's gimped move pool and speed. I then proceeded to abuse save/ reload cycles until I caught a modest Volcarona. Probably not the best option for competitive play (which would most likely be timid) but I'm sure it will get me through the game without feeling like I'm cheesing it too badly. It does have some awesome stats and type coverage though... it's an interesting mix for sure.