A friend of mine showed me some cool builds, which he is considering taking to Regs.
Strengths of the Merchant Pot Turbo deck.
In addition, Merchant Pot Turbo has access to many powerful boss monsters. Some builds even go so far as to incorporate Cyber Eltanin and Cyber Valley + Cyber Dragon to play 3 more bosses. The deck also has access to 3 Tragoedia, allowing it to drop Monarchs with ease. Tragoedia is basically a Spell card, but is treated as a monster. Cards like Tragoedia, Gorz, and later on Battle Fader will be extremely viable in MPT.
It's basically Monarchs on crack. My friend's version plays 6 Monarchs (3x Caius and 3x Raiza/Thestalos) This build is probably even faster than the famed Perfect Circle, and especially since the deck is basically dead now, MPT is the fastest Monarch variant.
MPT is extremely difficult to side against. After viewing the lists, it should be pretty obvious why.
Weaknesses of the Merchant Pot Turbo deck.
Why play MPT over LS? This is another big issue. MPT's main plusses are Monarchs and Pot of Avarice. (Not counting the occasional Cyber Eltanin.) Otherwise, LS has all of MPT's benefits. (Except MPT can play out of Light-Imprisoning/similar with far more ease.) G1, LS will be superior 10/10. Pot and Monarchs pale in comparison to JD.
An ideal Merchant Pot Turbo build.
3|Fotb|Raiza the Storm Monarch
3|Lodt|Ryko, Lightsworn Hunter
3|Mfc|Magical Merchant
3|Jump|Tragoedia
2|Ioc|Chaos Sorcerer
1|Tp2|Morphing Jar
1|Jump|Dandylion
1|Soi|Treeborn Frog
1|Mrd|Sangan
1|Dp03|Card Trooper
1|Csoc|Plaguespreader Zombie
1|Ptdn|Dark Armed Dragon
1|Dlg1|Gorz the Emissary of Darkness
3|Een|Pot of Avarice
2|Ptdn|Allure of Darkness
1|Sdy|Card Destruction
1|Tlm|Brain Control
1|Sdj|Scapegoat
1|Mrd|Heavy Storm
1|Sdp|Mystical Space Typhoon
2|Cp04|Bottomless Trap Hole
1|Mrd|Solemn Judgment
1|Mrd|Mirror Force
1|Lon|Torrential Tribute
The main difference in this deck is Raiza. Raiza is incredible, and provides very solid field control. Although some people might prefer running Thestalos, I would seriously suggest Raiza. After this deck is stopped by something like Mirror Force, you are going to have a hard time making a come-back. Thsi deck needs a lot of field presence, and Raiza + Caius is definitely the best way to go for it.
Why is this deck good (over other MPT builds?)
An Analysis of the Monsters.
3x Ryko, Lightsworn Hunter
3x Magical Merchant
1x Card Trooper
A very solid milling base. It basically lets you open with a miller every game. This is key to success.
"Magic:"
A lot of cards in here act like they were Spells. These cards are critical since they get milled by Merchant but don't make your deck not have spell power. Those cards are Monarchs, Tragoedia, and Battle Fader (which will go in over Card Destruction, Scapegoat, and probably Solemn Judgment when it comes out.) These cards are very key. More abound in the side deck (which features D.D. Crow.)
The problem with Necro:
Necro is highly suggested in this deck. A problem is that if you draw it you basically lose. There's already too many dead draw-esque cards like Pot of Avarice and extra Merchants. I don't think that running more is the way to go.