Well, I mean, if we cut red...
Scrolling up, I'm going to use the last list I see with a good showing, which looks like this:
4
Wooded Foothills3
Bloodstained Mire1
Forest2
Mountain3
Taiga1
Badlands1
Bayou4
Wasteland1
Volrath’s Stronghold4
Forgotten Cave3
Tranquil Thicket4
Mox Diamond2
Engineered Explosives4
Life from the Loam2
Maelstrom Pulse4
Lightning Bolt2
Grim Lavamancer2
Scavenging Ooze2
Tarmogoyf4
Dark Confidant4
Countryside Crusher3
Seismic Assault
Cutting red frees up 13 non-land slots immediately. Assuming we swap it out for white, we automatically add 4 Knight of the Reliquary and 4 Swords to Plowshares (since we want the removal and StP is the best removal spell we have access to). That leaves 5 slots.
But wait, let's think about this. Life from the Loam gets a lot worse when you lose Seismic Assault, since its remaining uses are: #1 Waste-lock people (exciting), #2 grow your three-drops (meh), #3 draw some cards for a bunch of mana (meeeeeh). Instead of growing our threes or slowly drawing cards, why don't we just make more creatures? Let's cut some of the Loams add 4
Green Sun's Zenith, since that will both give us card advantage and increase our board presence, which is sort of like making our guys really big. But...while we're on the subject of build your own monster, there's more than one way to slice that particular cake. Stoneforge Mystic plus a small equipment toolbox would give us guys who are superior in combat, so let's use Mystic and Jitte and...hmm...Sword of Feast and Famine.
Now that I think about, shaving down on Loams makes Mox Diamonds worse. We don't need access to all the colors and two-for-one-ing ourselves seems weak. Let's cut the Diamonds for 3 Noble Hierarch and one Birds. Cutting Diamonds and Loams means we don't need nearly as many lands, so we'll cut the number down a bit. Let's also add a few miscellaneous GSZ targets so we get the full value out of the card.
But wait, what's black adding to all of this? Bob and Pulse? That doesn't seem like enough to justify making the mana worse for a third color: Pulse is very meh and Bob is better in grindy long games, something in short supply in a largely tempo-defined format. So let's cut black and add in some other ways to generate card advantage: Sylvan Library is a good one, and Elspeth is good at breaking through board stalemates.
And...voila! Here's our new Aggro Loam list:
1
Sword of Feast and Famine1
Sword of Fire and Ice3
Aven Mindcensor1
Birds of Paradise4
Knight of the Reliquary4
Mother of Runes3
Noble Hierarch2
Qasali Pridemage1
Quirion Ranger3
Stoneforge Mystic1
Sylvan Library4
Swords to Plowshares1
Umezawa's Jitte1
Gaddock Teeg1
Thrun, the Last Troll1
Elspeth, Knight-Errant4
Green Sun's Zenith1
Life from the Loam1
Forest1
Plains2
Horizon Canopy1
Maze of Ith2
Misty Rainforest4
Savannah1
Tower of the Magistrate1
Verdant Catacombs3
Wasteland4
Windswept Heath1
Dryad Arbor1
Karakas1
Gaea's Cradle
...
I am only being a little bit of a smartass here. WBG Aggro Loam is a worse Junk deck, which itself is a worse Maverick deck. RG is really the core of Aggro Loam; cutting Crusher does not justify removing the red entirely because at that point
most of your card choices start to look really suboptimal. Fixing all those suboptimal card choices rapidly leads you into the realm Maverick or Zoo, and at that point you might as well just build Maverick or Zoo because those decks are tuned.
@marcel: Like I said, I don't think people are running the kind of hate that kills Terravore right now, and Crusher not having trample or evasion is a real cost. Plus, he is really slow to get off the ground and bricking on your Crusher triggers is pretty bad for you because then you actually have to do some work to make him effective.