I just want to see Darius make a campaign against the Shivans that draws upon the BP team's ingenuity and epicness.
For example, the death of the Colossus was a plot related death. The second Sathanas 17 jumped in, big C should have been jumping out. While the plot to seal Capella was smart, we only got to see the tiniest fraction of the massive firefight that was happening at Vega and the Capella-Vega node. Battle of Endor missions are a treat only if they're designed well and have the appropriate build up, and the BP team excels at that. I'd like to see more thoughtful approaches to fighting Shivans. More SOC, more secret projects, more deep space reconnaissance and tactical fleet maneuvering.
So yeah, I'd like to see the GTVA and UEF scheme and come up with a way to kill the SSJ Dante and take the fight to the Shivans. They've earned their right to survive, and after War in Heaven, I want to see them hammer that point home to the great destroyers.