I feel like having something like starcraft where aliens can "ally" with the terrain as a team would be a really neat idea in my opinion for facotrio. So basically do what you've done here but KEEP the original mobs. Heck if you could even add a new type of mobs kinda like the protoss from SC/2 and maybe another species,i feel like this would really stand out in your mod. Would be more then willing to try it out and test it for you if you want.