Maybe not exactly campaign mode, but a scenario.
These would most probably be 1v1 type matches.
The problems in a lot of matches is that red generally has a big advantage.
what if players started from a premade point.
For instance you could have just a regular random "Huge" map but one guy has the entire map in his own spaces all covered with 2s and the other guy gets like 3 that are spaced apart that are 8s; you would give a big advantage to whoever went second and that would make the game more fair. That was just an example of what I mean by scenario you can get really creative with this.
Since the developer I'm sure doesn't want to go through all the work of creating these scenarios perhaps it could be added to the deluxe map editor.
If you need more money making this a premium account only option would give more incentive to that.
P.S. I think you need more incentives for Premium because the alien race has no bonus and more exp doesn't really help if you have 2 upgrades a race and enough shards for unlimited boosts. So I think making things in the game that only premium can do is a great idea. Right now I'm not premium but if you make some stuff like this for premium only I will for sure buy the Premium forever account.