One of the very early missions in CoV (if done solo) has you with a small number (four or five I think) of Wolf Spiders. One of my very favourite early missions.
Also, throughout various points of the game you get Bane Spiders and other pets...
I'd love to see an Arachnos MM as an unlockable Epic 
Maybe keyed to a series of Arachnos-themed missions and badges...
And my suggested powerset?
Mace Blast (ST Attack)
Call Wolf Spiders (Wolf Spider upgrades to Wolf Spider TacOps which finally upgrades to Wolf Spider Huntsman)
Mace Burst (ST Attack, slightly stronger)
Equip Troop (Upgrade)
Mace Volley (Cone Attack)
Summon Mu Mystic (Mu Striker, upgrades to Mu Adept, upgrades to Mu Guardian)
Arbiter Intervention (Summons Arachnos Arbiters, Arbiter Drones and an Arbiter Drone Coordinator for a limited time [Gang War, with more power but less duration])
Call Bane Spider (Bane Spider Commando upgrades to Bane Spider Scout and then finally to a Bane Spider Executioner)
Boon of Arachnos (Upgrade)
I'd love an Arachnos MM, and I think the idea of it being an epic unlocked through a TF/story arc is a great idea.
That would be amazing, that would be soo cool, or an Epic as Arachnos Incarnate - mm / brute
Ive never really liked playing MMs, but if there was an Arachnos Power Set I would definatly Make one.
Only if Lord Recluse becomes a patron.
As long as the final pet is a Crab spider, it would be neat
Isnt Recluse a MM already? asumed then he would be a archanos MM :P
50)Sinergy X/(50)Mika.
(50)MaceX/(50)Encore
Sign the petition, dont let CoH go down! SIGN!
Pretty much - he summons Bane Spider Executioners Although, technically his powerset is "Lord Recluse" so I doubt we'd get all his attacks
OT:
Was checking your blog Zaprobo, the Binder of Beasts post.
That excellent Brute whose name escapes me right now was my brute Mace X
50)Sinergy X/(50)Mika.
(50)MaceX/(50)Encore
Sign the petition, dont let CoH go down! SIGN!
I like Zaprobo's idea. I think this would rad 
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ooooooo Arachnos MM!!! that would be so cool!
It sure would be interrested, but don't realy know how Lord Recluse would love you for abusing his minnions directly 
PS: I'm more wanting a demonic MM set. Or a ghost set like those Circle of Thorn guys.
I agree Arachnos MM as an Epic would give me a reason to play CoV more often.... and I really like the Idea of the 3 tier Upgrades for all pets (The Epic Part of the powerset)
Sapphire Maiden lvl 50 Eng/Eng/Flame Blaster
Misstrix lvl 50 Fire/Rad/Ice Controller
Foundations Claw lvl 50 Fire/Fire/Flame Tank
Lord Viscera lvl 36 Necro/Dark MM/Flame Mastery
Kestrell lvl 50 Rad/Kin/Soul Corr
Who thinks we should have an Arachnos themed MM? Maybe even need to unlock it via a SF or similar?
Note: if you haven't done the arcs and don't understand what I'm getting at, I suggest you play them all the way through them come back
Synaesthetix:if your mum wasn't already dead I would go kill her for bringing
you into the world