Are the arrays that the mission generator draws from complete? It seems like I can never get missions (any difficulty) to kill the mutants that spawn in my vicinity. I will go scout a location to find, for example, that Maze is populated by Mutant Soldiers and Gunmen, but there will not be missions generated for those targets in any category. This is true of plant missions as well, I will scout a sewer, find it to be full of Toxic or Cankerous plants, but get missions for Poisonous plants that spawn so infrequently that the mission times out well before I can find enough of them.

Is the fix for this as simple as updating the arrays with mobs that have been added since the original build? Maybe also some tweak to which missions are offered based on player rank?