Well, let's see ...<br/><br/>The Lion is on ice on The Rock. Definite potential for return, but maybe not without help.<br/>The Khan disappeared in the webway chasing DE. Also potential for return.<br/>Russ went into the Eye. He could certainly return, but what state would he be in? Wolfen Russ might not be as well received as regular Russ.<br/>Dorn - Dead<br/>Sanguinius - Dead<br/>Ferrus - Dead<br/>Vulkan - Dead, but got better, then disappeared. Given his ... unique status ... he could certainly still be alive, though it would be odd that he'd lain low so long.<br/>Corax - Vanished, believed en route to the Eye.<br/>Alpharius - Psyche  :P<br/><br/>I suspect Russ would be the most popular returnee, but his last recorded words were that he wouldn't be back til the Wolf-time, which is shades of Ragnarok. The Imperium isn't that much worse off now than usual. Okay, so half it is cut off, but the rest has a Primarch back.