Gravity/Cold
Actually Gravity/Cold wouldn't be bad. One of Gravity's big problems in holes in mitigation on teams, and the Cold Shields go a long way to remedying that. Solo it would great, since Gravity is pretty strong solo for anything short of a 4 man spawn. Grav Distortion Field + Snowstorm is pretty effective in neutering the mobs once the alpha is taken care of. You can do that by running the fog power, and dragging your shielded Singularity through the mob letting it suck the alpha. Then you slap Grav Distortion Field and Snowstorm on them, then proceed to Infridgidate, Hold, Propel them to death. Once you get the Freezing Rain equivalent you can open with that followed by Grav Distortion and Snowstorm( this worked great for Grav/Storm, even on teams.) If things get really hot, you have the aoe hold and wormhole for backup.
What would a cold-shielded Singularity look like?
Would the shield be humanoid, or would it look more like Tanker Icicles? Or nothing?
I may have to make a level 1 Coldy just to try this out...
How much would it suck? I know Gravity has issues but Cold seems to have a lot of must-have powers at low levels (actually, at all levels). I'm assuming you can cold-shield the Singularity. Can you buff its max HP?