I have been thinking Intercessors for cheap bodies, though. Sad that they're basically chaff for our expensive baby marines.
One thing Intercessors do VERY well is hold the line. 2 Wounds and 30" range means they can operate at better stand-off ranges than almost anything else in C: SM, and at a budget price. With the inclusion of Auto and Stalker Bolt Rifles, mobility or stand-off range can be improved even further. Also, note that C: SM added the Auxiliary Grenade Launcher (for free) which provides a bit of extra infantry clearing or AT capability, as well as the ability to throw a cheap Power Sword on a 3 Attack Sergeant.