I wanted a Mafia concept for the rats so I decided to use lots of short-ranged firepower and no warmachines except for the Ratling (tommy gun).

Grey Seer, Warp Scroll, 2 Warpstone Tokens, 2 Dispel Scrolls
Warlock, Full Gear, Storm Daemon, Dispel Scroll
Warlock, Full Gear, Warp Scroll, 2 Warpstone Tokens
Warlock, Full Gear, Warp Scroll, 2 Warpstone Tokens
4x25 Clanrats, Ratling Gun
4x25 Slaves
1x2 Rat Swarms
4x5 Gutter Runners, Tunneling Team, 2 Poisoned Hand Weapons

What do you think? It has lots of march blockers and warmachine hunters from the gutter runners, very strong short-range shooting to make up for the lack of long-range firepower.

What's the theme behind the warlocks?

I can see the GS being a mob boss, but for heros I would have gone with Cheiftains for "Strong Arm" men. Gotta have someone to break people's legs when they don't pay up.

Or assasins would work, but I don't like Eshin personally.

sounds quite a nice idea, wouldn't of done it personally but still could work. i agree chieftains with great weapons to wallop any non- payers, yer c yer

how many points is it in total?

On a side note, if you do actually use Cheiftain strong arms, see if you can convert the blade on his GW into a mallet. For the whole leg breaker idea.

I don't really get the theme either...warplighting is not really short ranged firepower...

And your only allowed one warpscroll.

Owaria

I can't really picture mafia rats..... You should probably try to explain more about your theme so more people could contribute to the idea.