Speed Painted Necron Warriors (and some advice, please)

Apologies for the quality...two bulbs are burned out in my little photo station.

Four hours over a two day period, and all 32 Warriors are finished, from sprue to plastic rods. They need basing, but I can't start on that until I decide on a theme. [read more]

But GW's literature is right, these are really great for beginning players to get a handle on the commitment it takes to paint an entire army.  Apart from the little plasma hose and, of course, the wash, all painting was done with two spray paint cans. I could have saved a bit more time by dipping, but the drying time would have filled up that saved time.

So the recipe is:

Prime with black.
Basecoat with Army Painter Chainmail spray.
Superglue to base.
Wash with Badab Black or P3 Armor wash.
Paint conduit with Scorpion Green.

Easy peasy.

Click to enlarge this crappy photo.

Now that I have my Overlord, Warriors, and about half of my Scarabs done, I just have the Ghost Ark and 5 Immortals left to go from the Battleforce. I also have a Catacomb Command Barge primed and ready to paint. And then there are about 6 or seven Crypteks and ICs....Finecast - sigh.

So I ask you, power gamers, what should I buy next to be a contender in 6th with this army? Scythes? Spiders? Monoliths?