The demi company and some of the others are a little restrictive points-wise, especially with me trying to envision using it as a Ravenguard (which is my first love for Marine fluff). There are some cool things in there though. The Librarius detachment for those who want to spend the points on it is pretty sick - success on castings on a 2+ or 3+ depending on the situation? Some buff to maybe make dreadnaughts at least a little more playable.

I was really p*ssed at first with the new RG chapter tactics as scout moves was really the major part of them in the last iteration, but the more I think about it and have talked with other RG fans, it makes for a possibly very nasty alpha-strike list. Shrike and some VV or ASM infiltrated up with 2+ cover in ruins first turn, then alpha striking down with troops who are potentially 4+ cover in the open or 2+ in ruins; some rumors that even the dreads will have shrouded who could then pop smoke to get a sick cover save. Figuring out the right ballance with some of the cumbersome new formations might take a bit, but it makes for some fun trying to figure it out.