Are you getting the DLC? I am curious to hear how the spy system is.
The spy/intel system is part of the free 2.9 update, so you'll get to play around with it even if you don't grab the DLC.
Whether or not I pick up
Nemesis depends largely on whether 2.9 finally the brings the game to a playable state.
If the update actually improves colony management to the point where it's tolerable (meaning I can actually enjoy the rest of the game), then I'll probably purchase the DLC. If I end up still having to deal with the same colony micromanagement nightmare bullshit as before, however, then I'll return to playing v2.1, and not look back.