SeekingOne--yes, I think that's what bothers me. I think because the gem is oval and horizontal it throws it out. Might have another look at some point.
In the meantime...
Retro exarch done, again thanks to Looshkin for the model, hope I did him justice!

Of course his armament isn't legal anymore, but I'm just going to say he is armed with a reaper launcher, I don't think anyone I play with will mind.
And with his squad:

So now the book is out I want to make a legal 1000 point force so I can start playing some games.
So this is the plan for the beginning, including what I've painted so far:
Farseer with spear
Warlock
5 Wraithguard with d-scythe
6 Scorpions, incl exarch* with claw
5 Dire avengers, incl exarch with diresword*
5 Dire avengers*
10 Guardian defenders with shuriken cannon platform*
Wraithlord with flamers and shuriken cannon*
6 Dark reapers, incl exarch with reaper cannon (maybe two squads of 3, flexible that way)
So it's a battalion at 969 points, with 22 models to paint (the asterisked models). I'm going to try to push through with the troops first, and hopefully get some games in by the end of January. It's not really what I want the army to look like in the long term, but it's a start... I do have this rule that I don't use unpainted models in games, so it always builds a bit slowly for me

Having 6 command points at this point size should hopefully give me a few fun tricks to spring during my games!