I gotta say the biggest things that have hindered my playing experience are the off-chance of having insufficient mission objectives available, and a graphical glitch that causes geometric planes to emit from my friends head. The former has only happened twice in my months of playing, but the latter is pretty frequent. If I'm not alone with the graphical glitch, I'd appreciate knowing at least others are experiencing it too.
These things aside, I can't explain just how entertaining this game has been for me and my friends. I've been steadily converting my circle into miners in their own right. Keep up the content addition, and thank you for the updates!
EDIT: Xbox One player for reference sake in case that matters.