I don't know what ladder you're on but that is an insane record. Granted I never battle that long because I don't have the time, I've never had a team go that well. Anyway, I barely have time to do anything these days so let's get down to this :L
Metagross - I have actually been meaning to try Choice Scarf Metagross but I'm pretty sure this isn't the set you want. I am going to sugest you turn him into a bulky rock setter as it give him the ability to hit back, which he does not currently posess, and it will also make it so that under some cirumstance you would to be able to use Trick, you would either end up locking yourself into Stealth Rock or be forced to switch, which is not the best situation. the set I am going to suggest is from Smogon, but I think you'll find it will be easy enough to use and will provide offensive and defensive results alike.
Metagross @ Leftovers
Trait: Clear Body
EVs: 252 HP / 96 Atk / 160 SDef
Adamant Nature
- Stealth Rock
- Meteor Mash
- Earthquake/Hammer Arm
- Pursuit
Rocks are obvious, Meteor Mash hits really hard even though Meta has little Atk investment, your choice of Earthquake or Hammer Arm will be your anti-steel type move, and Pursuit allows Metagross to come in on things such as the Lati twins, Celebi, and Gengar, who can't touch him most of the time, and as they run away to put in something that can touch Meta, you can knock them out or do a large chunk of damage as they switch.
Rotom-W - I see how you've come about getting your EV spread here and TBH I don't like it. Splitting the EVs in half (Half into SAtk half into defensive stats) doesn't really benefit you as much as it may seem. I used to do that a lot too and I found that it is quicker and more effective to get a spread from Smogon, as Smogon's sets are specifically tailored for certain roles. otherwise excessive experimentaion is the best way to get a good EV spread. Just thought I'd throw that in there. Anyway, your team kind of lacks any special attacking presence so I am going to turn Rotom into more of an offensive Rotom seeing as Meta went with a bulky attacker set.
Rotom-W @ Choice Specs
Trait: Levitate
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature
- Volt Switch
- Hydro Pump
- Hidden Power [Fire]
- Trick
Rather straight forward, it's pretty much the standard Specs set for Washy but with a little bit of Ben spunk in HP Fire, which usually OHKO's standard bulky Ferrothorn and deals catastrophic damage to any more Specially Defensive variants.
Sharpedo - Sharpedo is one of my favorite pokemon. Base 125 Attack and access to Speed Boost make him a very potent sweeper. One thing I see is that you are going for bulk, and if there is one thing Sharpedo doesn't do it's be bulky. Make his EVs 4 HP / 252 Atk / 252 Spd and think about replacing Substitute for Protect, so you can raise your speed in the face of faster threats. Also think about Ice Fang > Earthquake to hit Dragon types like Garchomp, Salamence, and Dragonite. Note that if you run Protect you will want a Life Orb.
Dragonite - I myself have thought about Scarfing a Dragonite, but it outside of bulk, Dragonite is outclassed in both Speed and Attacking stats by it's younger brother Salamence. Salamence also has an exceptional ability that complements Scarfers very well in Moxie. Standard ScarfMence will do well here.
Alakazam - I see noting wrong with it and if it works then keep it up ^-^
Terrakion - Once more everything is dandy, consider a Salac Berry tho ;)