My biggist problem with this game is that it is not moddable. Almost all games today are to varying degrees moddable. The window sizing at some point in the near future could make the game unplayable. I think the days of the desktop computer are numbered. This is a very complicated game for not being able to be moddable. The whole purpose of a simulation is to explore the what-ifs. If the parimeters can not be altered what is the point.
Although it's a bit of thread necromancy...but I have to beg to differ.
I haven't played this game much(WAY too complicated even when compared to Dwarf Fortress), but there is one thing I can be sure is that the game itself is already so sandbox-like, which has rendered modding capability almost unnecessary. I can't remember another 4X, no, another game of whatever genre which allows you to design your own equipment's function to this level of detail. Literally you have to mod your own components in...but as you said, the ability to mod in a greater level(Like weapon types. tech-trees or other things like themes) will still be good for this game.
And the days of the desktop computer are probably numbered indeed...not in the near future for sure, as long as you can't cram all those high-end gaming/professional hardware in a notebook/tablet/mobile, there will still be standing ground for desktop computer left, not to mention the incresing demand of HD and (probably)Hi-Fi, neither of which a non-desktop computer can provide easily.