北北北北北北北北北北北北北北北
Souper,
I have come up with a new deck that I think could have the potential to be very good. Please take a look at it and criticize it all that you want. I want it to be a very competitive deck. The metagame isn't to challenging. It is made up of mostly original decks, but I do encouter the occasional poorly made archetypes. Here is my deck, "Mop."
Pokemon:12
3 Movie Promo Mewtwo
3 Scyther
3 Farfetch'd
2 Ditto
1 Kangaskhan

Trainers:31
4 Gust of Wind
4 Pluspower
3 Energy Removal
2 Super Energy Removal
2 Energy Retrieval
3 Switch
2 Scoop Up
3 Computer Search
2 Itemfinder
3 Professor Oak
3 Bill

Energy:17
13 Psychic
 4 Dbl. Colorless
Its main purpose is to use Farfetch'd first and do leekslap. Then next turn retreat it, promote Mewtwo, attach an energy onto it, then Absorb the energy used to retreat Farfetch'd. I've found this to be a good opening combo. Then, just lay the smakdown w/ Mewtwo. Kangaskhan is in there for Psy Pokemon and card drawing. Ditto is for any trouble I might have with resistant Pokemon. Scyther is for free retreat and backup.
北北北北北北北北北北北北北北北

Overview

Looks like a pretty good Haymaker variant. Farfetch'd gives it a little twist, since most people don't use him anymore, in favor of Scyther. So does Kangaskhan.

Pok閙on

All I can say is maybe drop one Scyther and add one Mewtwo. Looks good other than that.

Trainers

Switch and Scoop Up is kind of redundant, let's drop the Switch and add a Scoop Up and a fourth Bill. Then drop one Gust and add an ER and SER.

Energy

Looks okay, since you've got low costs and the Retrievals.
Pok閙on (12)
4 Movie Promo Mewtwo
2 Scyther
3 Farfetch'd
2 Ditto
1 Kangaskhan

Trainers (31)
3 Gust of Wind
4 Pluspower
4 Energy Removal
3 Super Energy Removal
2 Energy Retrieval
3 Scoop Up
3 Computer Search
2 Itemfinder
3 Professor Oak
4 Bill

Energy:17
13 Psychic
 4 Dbl. Colorless
There wasn't really a lot of work necessary actually, it was pretty well built. The only other thing I'd like to add is some Lass; you might exchange the Farfetch'd for Lass, but I kept them since they were part of the strategy. Or you could cut a couple Trainers for some- it's up to you. Good luck!

~ Souper ~