@@Darker,
The Gak is a running, and very bad joke from the Season 3 livestream. Just search it up on the internet.
I mostly agree with you, except on Discord, Chrysalis, and Luna. The main reason why I love Chrysalis is because of her psychology, I've always loved villains with interesting psychology. Chrysalis invaded Canterlot not to be evil but as a LAST RESORT. Her people were dying, and she needed love, and fast. And lookie at that really like and happy city up there! In the comics, I thought that she was pretty cool, especially her with the CMC scenes (Those were hilarious). I also find the whole concept of her and the changelings to be interesting.
Discord, while a bit cliche, is interesting in how he actually is the only villain that breaks the Mane 6 for a few minutes. He also gets reformed, so that's cool. The whole 'draconequus' idea is pretty nice too. Villains don't need to do terrible, terrible things and harm people to be good villains. (Even though he kind of completed mindfu*%ed the mane 6, that's gotta leave some scars) Heck, look at Homura Akemi. She didn't harm anyone (Besides the incubators, but it was off-screen and they freakin' deserved it) and she's still a badass (anti)villain. I kind of just imagine Discord as a prankster that doesn't care what happens to anybody, underestimates people because he's basically a god, and isn't really a villain. He just does his stuff and if he's labeled a villain what the hell, he's having fun.
Luna's psychology is interesting, if you read the comics. An entity called the Nightmare tempted Luna with power and kind of completely mind-controlled her into submission. Her mind is very interesting. While Nightmare Moon was pathetic in regards to threaty-ness, in the comics, the Nightmare possessed Rarity and made her take an evil, evil army and invade Ponyville. As for Luna being lonely, she was on the moon for 1,000 years, isolated. That must do wonders for your already addled mind.
I never really was a fan of Sombra, he was a Sauron rip-off. But he's still a king! An evil king!
I like Sunset Shimmer's design, but everything else stinks. No offense. She had potential and they wasted it.
Tirek G4 also sucked the magic out of every living being in Equestria which transformed them into freakin' zombies. That's pretty evil.
The G1 villains that you introduced me to are actually really cool. Thanks, I really like that Lavan dude.