We have been thinking what we could do with Swarm mode in Outpost 2. I really like the mode, it's just a nice switch off your brain bit of shooting fun, and I think it holds up well on it's own ( Outpost:Swarm turned out much better than I could have hoped ). But, I don't think we integrated it well enough in Outpost:Haven, the idea was to add a little extra to go back to after finishing the story, to give the whole game more value. It does, but it's a little bit disconnected ( To the point that it actually works as a stand alone game with very little story context attached ).
Our thinking with Swarm in O2 was to make them optional "Side quests", kinda. The plan is that even during the game itself you'll be able to select a side quest from the mission select screen and go and have a bit of fun there before coming back to the story mode. Going down that path meant what do we reward the player with for doing a side quest ? They'll get extra XP which of course helps with unlocking items, but is that enough ? We want to encourage people to play the mode, there's no point adding value if only a small percentage of players are taking advantage of it, so we're going to add unlockable perks as your reward which should make a very real difference to the story mode.
So that's the current plan, anything to make this game even more complicated and hellish to code.
PS. Should we release Swarm:Facebook this week ? I can't see why not, so we'll do a soft launch some time this week I guess.