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OI. I have a perfect Hydreigon in my Black version right now and it utterly DESTROYS teams by itself. Don't underestimate that thing xD. Couple of immunities, amazing special attack, passable speed, perfect coverage with Focus Blast, Draco Meteor and Fire Blast - I mean, I fail to see how its merely an "attempt" xD.

As pseudo legendary its suppose to be a little bit of a game changer. It did nothing for the metagame. Gengar can outrun and outgun it.

I actually prefer Normal types. Their natural immunity to Ghost and sole weakness to Fighting (while few actually carry a Fighting type with them, some do run Fighting-type moves on their Pokemon to counter the more common Dark-types), along with their ability to learn so many TMs to play off enemy weaknesses helps tremendously. It's so much fun watching your opponent get mad when you fend off his pseudo-legendaries with something like a Delcatty or an Audino.

*sarcasm* Yea, it has nothing to do with 50% of all legendaries are dragons.

But excluding all the Dragon Legendaries, we only have a handful of non-Legendary Dragons, normally hard to raise but are really good once you power them up. But I like playing as the underdog, picking things that aren't overpowered for the sake of overpowered. To each his own, I suppose.

Going back to the Normal types, you actually don't need to worry about Ghost-types if you have someone carrying the Scrappy Ability, like a Miltank. As for Rock and Steel, nothing like a good Earthquake to put them in their place. Considering about 90% or so of the Normal-types can learn Earthquake, should be no issue. And if you don't wanna run Earthquake, that's fine. Since they have so much versatility with TMs, you can stick a Focus Blast on there for your Special Attack users, or you can use Rock Smash. It may be weak initially, but it has a high chance of lowering Defense, so it'll get stronger with each use. Odor Sleuth or Foresight also take care of the Ghost-type issue, and if they happen to be evasive it helps remove that too.

Normal-types are really versatile. I suppose Dragons can be too, but they're overpowered and a lot of people like to use them in meta. How many Dragon-types can you find in the areas below OU and Uber? Few to none. UU is where it's at, yo.

Difference is that you're not getting STAB off of any of your coverage moves if you run Focus Blast or Earthquake, and THAT'S the true advantage Dragons have - they pretty much get the extra 1.5x damage no matter what they're attacking. Normal types have it against most others, but they lose it if they use any non-normal type moves. Not a HUGE deal, per se, but still significant in my opinion.

Scrappy is a decent choice if you're going to counter Ghosts, but there are relatively few Pokemon that get it and even fewer that would WANT to use it - Swellow prefers Guts so it can get a boosted Facade after the Flame Orb kicks in, Stoutland benefits more from Sand Rush or Intimidate, and to be honest it's not like Exploud really has any options going for him anyways xD. I suppose Kangaskhan would probably want to use it more than any other Pokemon, since his other abilities aren't very good, but Miltank I could see going either way - Thick Fat's pretty decent in its own right. Just depends on what you're doing with the Miltank xD.

And moreover than that, Pokemon without Scrappy will be forced to use moves like Odor Sleuth and Foresight, which basically gives said Ghost a free turn to hammer you with whatever it wants - and it's not like being able to hit them with a Normal- or Fighting-type move will actually be super effective. If we had a Ghost/Rock or Ghost/Steel, there may be a reason to identify it and use a super effective Focus Blast, but as is it's essentially a wasted turn. Switching in to a Dark-type is a better choice.

Dragons aren't necessarily versatile, I'll give you that - but the thing is, they don't HAVE to be xD. When one move covers pretty much 90% of everything you'll ever encounter, there's not a whole lot else that you really need - throw a Fire or Fighting type move, a boosting move and a random filler move onto the set and you're golden xD. Normal types do have access to quite a few TMs, but they're more of the "jack of all trades, master of none" - no STAB off of almost any of them. Given the ubiquity of Fighting-types in the metagame as well, Normals lose a certain degree of their defensive prowess as well, since EVERYONE has a counter for Normal (except me, since I usually DON'T have a fighting type xD)