Dragon Quest-ion

Ok. the episode five of the six season in all is out. Nice episode but I have to major questions:
1. Where are all the other dragons?
We've seen several other major dragons along the series.

Remember this guy. Just a quick flashback. In season 1, his snorts were powerful enough to cause a localized nuclear winter.
Now that I think of it. This was a wasted oportunity in some measure. Garble could be related to him in some way. And justify being a bully because he is constantly scolded for being a disappointment for his family or something.

Let's not forget this guy. Who was big enough so tree were about waist height tall when he was standing.

And if that is not enough. There was an entire and huge dragons migration.

Where are half of these guys. Maybe when they get past some size the Dragonlord exiles them as a prevention measure. You know. In case some one decide to challenge him to a duel in order to rule or something.
Then I thought. Maybe after they amass a fortune of their our, they stop giving a flying feather about dragonkind in order to protect it.

But then, guess who makes and appearance in the aforementioned migration.

Maybe they do something like the "Long Walk" from Judge Dredd. I don't know.

Still, imagine how awesome this episode will be if we had all these mighty beast clashing for the gauntlet to rule thhem all. And yes, I made an overused LOtR attempt of a joke. But a dragon version of Godzilla: Final Wars is just too good to miss. This is the stuff legends are made of.

2. This is so obvious than Spike himself pointed out:

How they were able to follow him!?

If it was magic (they are two unicorns after all). Even if they lack Pinkie Pie's ability for...basically anything including Solid Snake's camouflage. How they were able to stay just behind him on all times. Maybe they teleport. this is the most straight answer (And possibly the only answer I can came up with). If that's so. Why we didn't hear of saw the traditional flash that comes with it? May be that Twilight perfected a stealth teleporting spell. Like comparing black and smokeless powder.

Old spell vs. New spell:

Perhaps, this world is so peaceful because Celestia has been using stealth teleporting hitpony to make any hater disappear under well covered circumstances.

Equestria just became a little more sinister.

To deviate our attention from this. We've seen the "Secret of my excess" episode. The more a dragon hoards, the larger it gets. Because Spike got too big to fast he became a raging monster. This was one of the firsts times the ineptitude of the Wonderbolts as an Equestian Air force was shown. Stick to air shows guy. It's better for your health.

Maybe, if they induce this growth gradually. Spike may be able to control it better. or even train himself in doing so. As a full sized dragon fighting as an ally. What an great defense system for a land that is constantly attacked.

Imagine a face-off between this:

And this:

To much of a possibility? With Dragonforce playing in the background?

And to close (Because this got way too long). The Dragonlord.

It seems have influence by the How to Train your Dragon's Bewilderbeast.

It was a nice design. I don't complain. But it could be improved. It's the king of the dragons we are talking here.
Like the Ultimate Blue eyed Dragon.

Then Give him Three voices and conflicting personalities.

Or be visually decieving. A smaller dragon like Onaga:

I know these are european dragons. But why not Shenlong:

Or finally, overkill it with the bombastic Dethwing:

Maybe I should make a top of my favorite dragons. But who cares. Nopony in gonna read this anyways.