Clearly you never actually used any of these Pokemon:
Haxorus - 147 base attack, decent speed and dragon dance. Dude fuckin destroys
Hydreigon - Incredible special attacker with unique typing, an awesome design reminiscent of Ghidorrah, and amazing stats.
Volcarona - Quiver Dance. Seriously. This thing with that move is a strain of elegant death.
Galvantula - Compound Eyes Thunder with cool typing and a great design. An amazing in-game mon with competitive potential.
Scolipede - A movepool unlike any other for its type. Lets see Beedrill run Rock Slide and Earthquake In Gen VI it got fucking speed boost making it the premier baton passer.
Genesect - This thing is death on skids. It's way cooler than Durant, the first bug type legendary, and an amazing battler.
Conkeldurr - Makes Machamp look like a bitch. Much better movepool, and a much better stat distribution. Fucking destroys.
Landrous, Thundurus - Landorus-T makes the legendary birds look like shit. It smacks them around with its great movepool, fantastic typing and 140+ attack and makes them feel like a bitch. Thundrus-T uses its amazing Special attack to hit enemies in a way Zapdos never could. Zapdos has bulk and decent power but Thundurus-Therian annihilates. And, unlike the legendary birds they have 2 forms. Landorus Incarnate becomes an incredible special attacker thanks to sheer force and Thunderus Incarnate has Prankster making it invaluable in Double battles. Priority thunder wave, man. What do the birds get? Fucking Pressure. Who the fuck wants Pressure?
Emboar - Run Reckless Flare Blitz and Head Smash on this thing and watch your enemies disappear into fucking powder.
Victini - Who the fuck cares where it is on the Pokedex? It has cool typing and an amazing, unique movepool while have a cute appearance.
Darmanitan - With max attack it tops out at 416 attack. Impressive, right? Damn Right. Guess what though? It gets fucking Sheer Force turning this rictus grin bearing ape in to death incarnate. After a Sheer Force boost and STAB Flare Blitz goes up to 234 base power. That coming off a 416 attack pretty much kills anything that doesn't resist it and nearly kills most things that do.
Liepard - Sleek, cool and packing prankster.
Leavanny - Grass Bug may be a shitty typing but Leavanny has a sleek design, 500 BST and a good moveset. Perfect for in-game and one of the best basic bug types in the series
Krookodile - Ground/Dark Crocodile with intimidate or moxie. Dealer's choice. Cool typing, cool design, decent movepool, powerful stats, awesome abilities.
Carracosta - The fossil you should have picked. Water/Rock warrior turtle. Click shell smash and watch your opponent's team break down.
Archeops - Bad ability. Still hits like a truck while it can and has a pretty goofy design that's kinda endearing. It's trying so hard to fly.
Zoroark - He got a fucking movie, dude. Also has the unique ability illusion which is one of the coolest abilities in the game.
Reuniclus - It's not even doing the "3 thing", man. It's a psychic cell with a cool design, great offensive stats, good bulk, and the ability to wreck face in a trick room.
Escavalier - The trick room death machine.
Ammongus - An amazing, bulky spore user with an amazing ability in regenerator and fantastic bulk.
Ferrothorn - Really fucking isn't pineco. Great unique typing. Fantastic bulk. Great utility movepool and one of the most reliable walls in the game.
Eelektross - Electric monotype with levitate is awesome. Respectable bulk. An amazing movepool, and decent mixed offensive stats. Saying it "looks the same as its prevolution" is an insane statement. That's like saying Charizard's shit because all it is is a bigger charmeleon with wings. Seriously, Eelektross has a completely different body shape that its prevoltuion. The only thing the same is its colour scheme which can be said for nearly every evolved Pokemon ever.
Chandelure - Unique typing, fantastic special attack.
Beartic - It's a polar bear. That's cool.
Golurk - IT'S ONE OF THE BEST DESIGNS IN THE FUCKING SERIES. IT'S A FUCKING ANCIENT GOLEM THAT FLIES THROUGH THE AIR USING ROCKET PROPULSION.
Bisharp - A powerful pokemon with unique typing, a great design and an amazing ability.
Mandibuzz - Wow, an incredibly bulky pokemon based on an unused animal with cool typing, an amazing ability and a great moveset. Seriously? "Another bird"? That's a legitimate complaint to you? Are you actually retarded? Birds are one of the 5 core fucking vertebrata classifications you dunce. That's like saying "Another mammal" or "Another reptile". OF COURSE THERE'S GOING TO BE MORE BIRDS.
Braviary - As I go down this list it becomes clearer and clearer that you were in special ed.
Terrakion - I'm actually done making my case for these Pokemon. You've clearly never used them. You jumped on the bandwagon 3 years ago and never jumped off. See, I'd believe you that you just had a difference in taste but you specifically hate all Gen V Pokemon. That's not about taste at that point. You just copied every loud asshole from 2011's opinion and decided it was your own.
Zekrom - Don't care
Keldeo - Yeah, it's a water horse. Because that's such a WTF idea but a lava camel and a mime puppet are fucking ingenious.