User blog comment:Chumblespuzz/Future Update Plans/@comment-5007614-20120706180311

There have been discussion on the forums about how to make Battle Nations more "Battle" like, instead of "Friendly Nations". Players are afraid of huge hospital bills, so they do not actively defend their outposts. Improvements to Defensive Structures like Garrisons are in talks :)

Anyways, we just got 1.5, and now we see new critter formations which include rats and Sandworms. Raiders have a few new formations (but not that challenging if you use tanks). We got the Raider VS Bottle Rockets event that is making raider invasions interesting, and filling up my hospital. Lastly, we might see some newly revamped Silver Wolves in 2.0! PvE is always easy to tweak though...