I kinda wanna do a pool about who people think the winning MC will be.
I see a few contenders.
1) Bloodthirster. The highest quality WS 10, Init 10, instant death thirting for blood money can buy
2) some tooled crazy psychic power Lord of Change crazy mind meld. You'll have maledictions in your maledictions, cuz we heard you like maledictions...
3) Flying Hive Tyrant. What this guy has going for him, that others don't is guns. Lots and lots of guns. Like, 12 Twin-linked str6 poisoned guns. Plus nearly as many powers as the Tzeentch guys, and nearly as many attacks the khorne guys. Plus, extreme resistance to psychic powers.....you watch out, 'nids could be a contender.
4) Great Unclean One. Like your momma, he sits around the house if you know what I mean. Easy access to Eternal Warrior AND Instant Death Weapons, Poison, feel no pain, and more wounds and toughness than you can shake a poo-covered stick at.
5) Riptiide/Wraith Knight.......naw son, shooting ain't where it's at this time. Armor means nothing, and your wounds and toughness won't save you without Eternal warrior.
6)Daemon Princes? (either) Nurgle with a Daemon Weapon, maybe.....but no eternal warrior and T5 is doom, so hope you roll well on the biomancy chart.
7) Dreadknight, jump, heavy psilencer, sword, here's my secret favorite. Psilencer will do surprising damage on both psykers and deamons (so just about everyone who has a shot). Good attacks, Str 10, re-rolls everywhere, lots of bonuses against demons, an instant death weapon.......yeah...he's a hard counter to all the other contenders.