As the thread says, non legendary requests. Therefore Garchomp. It has Rough skin ability as well witch is unique and its speed as well is Nice.When i comes to Dragonite, i often play season. Its rare to use spread moves and if you predict, you can roost away the fake outs. Dragapult is better but dragonite is just a very cool poke to useWell... you need to mention why they should be added. Stats aren't everything.
When it comes to WP users in VGC, Dragonite isn't anywhere near the top. Most WP mons this gen usually utilize self proc strategies, which goes against Multi Scale. Multi Scale itself gets defeated by Fake Out and Spread moves. Inner focus is nice, but it gets outclassed by Dragapult as a WP wielding, intimidate immune dragon. Dragonite is definitely solid in OU/BSS, but not in doubles. Overall, if you want a WP proccing dragon that can cause havoc, you turn to Dragapult not Dragonite.
Garchomp once ruled the VGC format... But nowerdays, it falls into the shadow of the infamous Landorus-T, which is a far stronger Pokemon in the format than Garchomp is. Also, with the rise in fairy types, and the introduction of dragapult, Garchomp falls to the wayside a little. If there was a Season 6 style season for the CT format, you could see Garchomp take over from where lando left off. However, for now, Garchomp is outclassed as a Pokemon.