So after brewing and trading I'm finally sleeving this up and will keep this list as the current version.  This version is mostly lacking the expensive stuff that I don't want to take out of other decks.

Recent changes

Island -> Eldrazi Monument
Island -> Master of Etherium
Darksteel Ingot -> Basalt Monolith
Slate of Ancestry -> Washout

Incoming:
Thopter Assembly -> Myr Galvanizer

Maybe purchasing:
Grim Monolith - to replace Mask of memory
Power Artifact - to replace Call to mind
Kozilek, Butcher of Truth - to replace pathrazer
Master Transmuter - to replace Guard Gomazoa
Genesis Chamber -
Binkmoth Well - to replace an island

Still needs a Pithing Needle

update7/16/14
Picked up a foil pithing needle but not sold on it.  Grim Monolith and Power Artifact have both been added, but Power Artifact will likely be cut and placed in a 93/94 deck at a later time, but it's here now, and it's not so broken (not all the time anyway). 

Karn Liberated was also added, and a Temple Bell was cut.

Artisan of Kozilek will be replaced with a Mycosynth Golem

Further write up/info at mtg salvation.
http://www.mtgsalvation.com/forums/the-game/commander-edh/multiplayer-commander-decklists/541961-memnarchs-myr-army


Recent updates:

Karn out - Koz in
Ashnod's Altar out -> Wurmcoil in

Will need to find replacements for the following cards which are being traded:
Phyrexian Metamorph
Master of Etherium

Update 9-7-2014
Voltaic Construct -> Tawnos's Coffin
Guard Garmozoa -> Fellwar Stone
Master of Etherium -> Beast of Burden (master was traded)
Reshape -> Transmute Artifact
Urza's Blueprints -> Tezzeret the Seeker

9-12-2014 Metalworker unbanned in multiplayer EDH
Mycosynth Golem --> Metalworker
Myr Enforcer --> Voltaic Construct

11-21-2014 - picked up a foil myr incubator:
riddlesmith out > incubator in.