Depending on how differant of a deck you want to run, there are a few paths to take. Right now you seem to have a control/combo deck mixed with a Mirrodin T2 deck pre-5th dawn.
You need to decide: Do I want artifacts in play to deal damage, or do I want artifacts leaving play to do damage. One would think that because Ravager likes artifacts, and Master of Etherium likes artifacts, then they would both be good in a deck full of artifacts! wrong. Master for a deck running ravager is at best a sideboard card to bring in against Null Rod Fish.
A Ravager focused deck is likely best complimented by:
Mishra's Workshop
Triskellion x4
My teammate has experimented in the past with a colorless artifact deck that ran these cards. The deck was moderatly sucessful... The thread can be found Here:
http://www.themanadrain.com/index.php?topic=35060.0Alot of the discussion about the deck, is how this deck functions against GAT and Gush in general. So some of the comments may be outdated. But the core concept of the deck still holds water.
I opted for a Metalworker Staff combo, fueled by Skullclamp, and reinforced by the adaptability of Myr retriever and the savageness of Trike and Ravager.
Land (17)
4 Mishra's Workshop
4 Ancient Tomb
4 Wasteland
3 Mishra's Factory
1 Strip Mine
1 Tolarian Academy
Creatures (20)
4 Arcbound Ravager
4 Frogmite
3 Triskelion
3 Metalworker
3 Juggernaut
3 Myr Retriever
Spells (23)
5 Moxen
4 Thorn of Amethyst
4 Skullclamp
3 Cranial Plating
3 Chalice of the Void
1 Black Lotus
1 Mana Vault
1 Mana Crypt
1 Sol Ring
Sideboard
4 Leyline of the Void
3 Sphere of Resistance
3 Pithing Needle
3 Duplicant
This list is a bit dated. I think in the most recent builds, There were no Juggernaughts but instead, more 4-ofs... spesifically 4 Trikes, 4 workers, 4 Chalice, and 4 Retrivers. Also I think Cranial platings were dropped for more busted artifacts, namely Memory Jar, And at least 3 Staff of Dominations.
As for Master of Etherium, or Force of Will in general - we have done a lot of testing, and had a fair degree of sucess marrying Workshop and Force of Will.
Something to the effect of:
3x Goblin Welder
3x Vexing Shusher
1x Triskelavus
1x Memnarch
1x Sundering Titan
4x Chalice of the Void
4x Shivan Reef
4x Volcanic Island
4x Mishra's Workshop
2x Ancient Tomb
1x City of Traitors
1x Tolarian Academy
4x Force of Will
1x Mana Crypt
1x Mox Sapphire
1x Mox Ruby
1x Mox Jet
1x Mox Emerald
1x Mox Pearl
1x Sol Ring
1x Mana Vault
3x Gilded Lotus
4x Thirst for Knowledge
3x Master of Etherium
1x Wheel of Fortune
1x Memory Jar
1x Trinisphere
1x Fact or Fiction
1x Mindlaver
1x Black Lotus
1x Tinker
1x Ancestral Recall
1x Time Walk
Or More recently:
4 Volcanic Island
4 Shivan Reef
4 Mishra's Workshop
2 Ancient Tomb
1 City of Traitors
1 Tolarian Academy
1 Black Lotus
1 Mox Emerald
1 Mox Ruby
1 Mox Pearl
1 Mox Sapphire
1 Mox Jet
1 Mana Crypt
1 Mana Vault
1 Sol Ring
Robots in Disguise--
3 Triskelion
1 Triskelavus
2 Sundering Titan
1 Inkwell Leviathan
4 Master Transmuter
4 Goblin Welder
1 Mindslaver
1 Memory Jar
1 Thousand-Year Elixir
The rest of the goodies--
4 Force of Will
4 Thirst for Knowledge
4 Chalice of the Void
1 Ancestral Recall
1 Time Walk
1 Fact or Fiction
1 Tinker
1 Trinisphere
You'll notice that this deck doesn't run Master of Etherium, it does however run both Force and Shop.
At any rate, I hope these decks give you some good insight into some new ideas for the deck. I guess my point is that Arcbound Worker, Ornithopter, and even Disciple of the Vault are usually not going to be good enough to make the cut.