Personally, I loved the original Gen 3. My main problem with ORAS is lack of challenge since everything seems to be leveling up too quickly. And about the idea of having Houndoom and Rapidash get new evolutions, that was the kind of thing they did with Diamond and Pearl which are by far my least favorite games.
Rather than trying to come up with new pokemon, not counting the stupid beaver one that was the best HM slave ever and having a new bird pokemon based on some kind of real life bird no one can really recognize anyway, they mostly decided to have new evolutions of old pokemon, often ones that didn't really need it. Roselia needed a pre-evolution? Nosepass, a freaking big nosed Easter Island statue, needed a new evolution? Not to mention Eevee evolutions tied to locations which was pretty annoying.
I'm not saying a three headed dog wouldn't be cool, but I worry that if they try to have new evolutions of old stuff, they'll just mess it up again. Which is what I'll always view DP as. I'd rather have a new generation with lots of new stuff. I don't mind sifting through a garbage bag pokemon, an ice cream cone, or cotton candy if it means I get 8 ft long centipede monster or an adorable flying squirrel pokemon or a common bird pokemon that evolves and finally gets a typing other than Normal/Flying.
For the record, in my opinion, I think obviously they wanted to make money with ORAS, but on the other hand, it's one of few mainstream series where people who are getting into it now when they're eight years old can easily play something that I played 12 years ago without having to like buy a cartridge off of ebay. So I'm not going to be hating on it even though they could have done a lot better with it.
Take all that with a grain of salt, though I guess. I'm obviously not the completionist some of you are and I have plenty of little or gigantic hang ups about different aspects of pokemon (like...pretty much everything about Lucario for instance).
Oh, and Samurot or however it's spelled is kind of like a narwhal.