While I have not yet played with the scalpel and therefore haven't had the pleasure of a complete null-deployment, I do love taking advantage of the reserve mechanic!
I usually play maelstrom missions, 1850-2000pts.
T1. I reserve all but 3-5 units (some tough, some not) that hide behind LOSB terrain where possible.
T2. With a little reserve manipulation, 10-14 units and vehicles arrive to target the most threatening or most strategically significant units, grab OBJs and might I add wreck face!
T3+. My opponents are stretched to deal with the mass of units and vehicles positioned to avoid, reduce, dilute or draw and absorb any retaliatory action. Any of my stragglers show up and I keep applying pressure and grabbing OBJs.
Haven't lost yet with the new DE!