I've done all the project scans thus far. Mostly I just wanted the Detect Vulnerability and Simulacrum Access Key but now I started getting upgrades for my camera. One Spy-mission on Pluto scanning everything done with pure stealth (e.g. Loki) seems to about get you your daily rep quota for Simaris, so it's relatively effortless especially since Spy 2.0 rewards are something nice anyways.