Since I don't see that this has been reported yet here, this is just a FYI for the developers if and when they update Kopernicus to 1.4.X of a problem I've had and which I've seen reported elsewhere: When I use Kopernicus as part of a planet pack (in my case the OPM from Galileo) it seems to confuse solar panels as to where the Sun is. As a result, they don't work at all. Mind you, they physically seem to be pointing in the right direction, but no matter what I try zero energy is produced. I also first tried to see if it was related to other mods I use like Near Future Electrics, but the problem remained when I removed them. The only way that I got solar panels to work was to remove Kopernicus (and any mods requiring it, obviously). Since this is effectively a deal breaker when it comes to using anything related to Kopernicus I wanted to make sure the developers knew about this.
Again, this isn't a complaint or some demand that this be fixed immediately, just a FYI of something you may wish to look into when the time comes to update to 1.4.X. I have plenty of other things to do in my current game in the meantime before I worry about wanting to head off to non-basic planets.