I was playing with this list for a while, but have discarded it in favour of just using the Steel Legion list. There are two main reasons I've done this
1) Moving all the toys to Support Formation status seems overly restrictive, and smells to me of making difference for difference sake. I'd probably suck it up though if it weren't for item 2...
2) The infantry seem to me badly overcosted. The hypaspist demi-century has seriously underperformed in every game I've played. At around 30 points/stand*#, compare their statline with IG Stormtroopers (better firefight, Scout ability, can shoot up tanks up close, 25 points/stand), Chaos Marines (decent ranged squad weapon, demon summoning, better statline across the board, 34 points/stand). I reckon they should be costed closer to 22 points/stand if they are to be competitively balanced within the game.
Anyway, thanks E&C for all the work you've put in. I'm quite a fan of the alternate weapon fits on Titans - it gives me an excuse to use more magnets

*Yes I've fudged the calculations slightly on all these because I CBF trying to work out points values for the various command stands - but it should be close enough for the purposes of comparison.
#Even with the 5-stand infantry upgrade, they still weigh in at around 27points/stand - still too high IMO