I have to apogolize, my old nemesis, serialization (data persistence/saving&loading) reared his ugly head again and I spent the last two weeks trying to write a system that lets me easily save and load objects in the world... Since it involves a lot of advanced programming stuff I had no prior experience with, I spent half of the time researching and browing through hundreds of threads and manuals. Oh well, a few hours ago I finally made a breakthrough
So now I can implement it and then actually work on things that are fun again, like big guns and even bigger vehicles
Edit: My steam account showing 95 hours of playing Civ V might have been a reason for the slight delay as well