Alright, I promised to answer, so here I go.
Dragonite - Nothing terrible tbh. I like the originality (that you stole from Fizz) of Agility Dragonite. I thinks it's fine, though you can consider a Mixed LO Dragonite set, since Scarf Garchomp really isn't as scary as everyone grants it to be. This or Mixed LO works just fine with the team.
Dragonite @ Life Orb
Ability: Multiscale
EVs: 168 HP / 252 Atk / 88 SAtk
Lonely Nature
- Dragon Claw / Outrage
- Earthquake
- Fire Blast
- Extreme Speed
The set is pretty self-explanatory, and you can decide to something like 12 or 24 Speed EVs, to outspeed all Goodra's without investment in their speed stat.
Rotom-W - Great set, and typical set. You're best off running that Rotom-W for a while, so keep it.
Genesect - Ok, though I kinda dont mind Genesect abusers anymore, I absolutely hate this set, mainly cause you either 1.) Get killed while setting up OR 2.) Get crippled by status. Honestly, Genesect may have some potent resistences, but it has little bulk. So, I suggest making Genesect your Scarf, rather than Excadrill, cause tbh, Excadrill is a pretty bad scarf. So you have 2 sets to choose from:
Physically Based Scarf:
Genesect @ Choice Scarf
Ability: Download
EVs: 252 Atk / 252 Spd / 4 SAtk
Naive / Hasty Nature
- U-Turn
- Iron Head
- Ice Beam / Explosion
- Flamethrower / Explosion
Simple and standard set. Use Explosion only if you find yourself having trouble with like, Rotom-Forms.
Specially Based Scarf:
Genesect @ Choice Scarf
Ability: Download
EVs: 252 SAtk / 252 Spd / 4 Atk
Naive / Hasty Nature
- U-Turn
- Ice Beam
- Flamethrower
- Flash Cannon / Thunderbolt
Once again, simple and standard.
Florges - Nothing to do here.
Mega Gengar - You're doing it wrong. You see, Smogon has been A LOT about Mega Gengar, and already votes to see if it should be banned or not (really close vote, only a 1% range difference). And while reading the Gengarite Discussion Thread on Smogon, they brin up the point that MGengar is better of as a support Pokemon, not as an effective sweeper. Since It has Shadow Tag, it's the perfect killing trapper.
Gengar @ Gengarite
Ability: Levitate
EVs: 252 HP / 252 Spd / 4 Def (SDef)
Timid Nature
- Perish Song
- Substitute
- Protect
- Pain Split / Disable / Taunt / Shadow Ball.
This is the very set that almost banished the Gengarite from OU today. Although this at first looks extremely Noobish, it's actually just plain scary when facing one. See, Shadow Tag mechanics prevent the opponents Pokemon to switch out, until after you switch out, meaning that they simply cannot switch out that same turn as MGengar can (Unless you're a Ghost type), unless they carry Volt Switch or U-Turn. See, you get to PICK what will die, and oftentimes kill 2 or 3 pokemons with Gengar, for Gengar only. The set goes like this:
Florges vs Gengar
Florges switches out.
Transformation to Mega Gengar and set up your sub that turn.
Mega Gengar uses Perish song while opponent breaks sub.
Protect lolz
Sub up
Protect lol x2
Switch out and watch a perfectly healthy pokemon go down.
The last move is really just a filler. Pain Split gives you recovery vs like, Blissey. Disable allows you to Disable Tyranitar's Pursuit, making it unable to trap you. Taunt shuts down taunters, and prevent stuff like Heatran from setting up on you, knowing thwy'll die. Shadow Ball is just to kill off any Ghost types, since they are immune to Shadow Tag. Gl hf, you'll be hated on the ladder for this.
Excadrill - Since we said the scarf will go, you can just change Iron Head or Rock Slide, and eithe opt for Sneaky Pebbles hazards, or Substitute, to make Excadrill a notable force.
That's all, son, gl with the team.