Hey AgentDell, thanks for finishing this up for me and adding sprites and specific sets! Here's my take on what should be removed or added for the Offensive Threats; I'll get to the Defensive Threats some other day. I might repeat some things that Raseri has already mentioned
since I wrote this up and then saw his post. Feel free to call me out on IRC if you disagree with anything (this applies to everyone else too)
Absol - Remove Mixed Attacker; it's not effective enough / too similar to the All Out Attacker set.
Altaria - Remove Life Orb + Power Swap; it's literally never seen and inferior to Choice Specs.
Armaldo - Remove Choice Band and Double Dance; they're not effective and outclassed. Mention a Tank set.
Banette - Remove this entire Pokemon; it's too outclassed by Golurk and there are better choices to set up Trick Room.
Basculin - Remove the Choice Scarf set; it doesn't hit hard enough to be considered as a threat.
Beartic - Not effective enough to be a threat in my opinion. Remove(?)
Butterfree - Double Powder should be considered as an Defensive Threat.
Camerupt - These two sets perform the same role; I would fuse them into one Rock Polish set. Add a Tank set.
Drifblim - Remove SubCM; it's too similar to the ChestoRest set, which is better.
Electabuzz - Remove the Charge Beam set; add a Eviolite Attacker set.
Electrode - Remove the Lead set; it's too similar to the Special Attacker.
Emboar - Remove the Choice Specs set; the Mixed Wallbreaker basically does the same job, which is surprising the opponent.
Exeggutor - Harvest should be considered as a Defensive Threat.
Floatzel - Bulk Up should be renamed as Bulk Up + Baton Pass since Floatzel is never going to sweep teams by itself.
Fraxure - Add a Choice Band set.
Gardevoir - Add a Life Orb Healing Wish set. Fuse Defensive Calm Mind and Offensive Calm Mind into one set since they are too similar.
Gigalith - Remove the Curse set; it's too uncommon and easily stopped.
Golem - Remove Rock Polish and Choice Band; see above comments.
Golurk - Add a Rock Polish set.
Huntail - Shell Smash should be renamed to Mixed Shell Smash, which differentiates it from Gorebyss.
Kadabra - Remove the Choice Scarf set; it's too weak and is complete bait for Pursuiters.
Kangaskhan - Rename the Scout set to Life Orb. It doesn't have U-Turn so it can't really be classified as a scout.
Krokorok - Remove this Pokemon; too weak and frail to be considered a serious threat.
Lairon: Add a Tank set.
Lampent - Add a SubSplit set.
Lapras - Add a Special Attacker set.
Leafeon - Add a Baton Pass set.
Lickilicky - Remove the Mono Attacker set; it's almost never seen.
Liepar - Remove the Fake Out set; it's too weak to do serious damage. Add a Prankster Support set.
Ludicolo - Add a Synthesis Tank set.
Remove the Mixed Attacker and Choice Scarf set; they're too uncommon and easily walled.
Lunatone - Remove this Pokemon; simply a bad Gardevoir.
Magmar - Remove the Belly Drum set; Charizard does this a whole lot better.
Masquerain - Remove Offensive Quiver Dance; Butterfree does it better.
Mightyena - Remove this Pokemon since it's simply a bad Absol unless it magically gets two or more kills, which isn't going to happen.
Mothim - Remove this Pokemon; Butterfree outclasses it.
Musharna - Add a Trick Room set.
Ninjask - Remove Offensive Baton Pass; it's too similar to the Baton Pass set.
Pelipper - Rain Dance should be renamed to Tank; since it hits pretty hard.
Pikachu - Remove the Nasty Plot set; it's too frail to find a turn to set-up.
Rampardos - Trick Room should be renamed to Trick Room Sweeper.
Relicanth - Add a Tank set.
Rotom-S - Remove the SubCharge set; it doesn't work since Rotom no longer has a Ghost typing.
Sawsbuck - Add a Baton Pass set and Subtitiute + Swords Dance set.
Seviper - Remove the Coil set; Arbok does it better.
Simisage - Remove the SubSeed set; it's not common enough to be a threat.
Slaking - Slash a Choice Scarf set.
Swoobat - Remove the Dual Screens set; Swoobat has better things to be doing than that.
Throh - Remove the SubProtect set; I don't see what that accomplishes.
Tropius - This should be classified as a Defensive Threat; Swords Dance is too weak and Harvest is primarily defensive.
Vigoroth - Remove the SubEncore set; it's too uncommon and weak to be considered a threat.
Vileplume - Remove the SunnyBeam set; Exeggutor does it better. Add a Life Orb Tank set.
Whiscash - Remove the Tank and SubDance set since they are weak and uncommon.