Way way too many points in troops. Tac squads are awful take as few as you can get away with. More than 20 guys is not needed until you get to 2000 points. So drop a squad and give the others good equipment.
I've found in my previous games that the amount of Bolter spam three squads can put down-range is easily the match of potential upgrades for the Tactical squads, however I will consider dropping the Tactical Squad
As stated above that Libby is not as good as Villain who's the same points. Drop the Epistolary upgrade or swap him for Villain. Also your powers need to be in your army list no changing between opponents.
I'll probably drop the Epistolary upgrade. For the set-up I'm using none of the other powers I can take from the Codex are that great for what they do (
GoI is pretty useless on an Assault Termie squad)
Solo Landraiders are not a good idea. Most people have cut down on their ability to deal with AV14. But they can still deal with 1 Landraider. Take two or three and cause people real problems.
Storm Talon needs a buddy. Not sure you need the Aegis in this army. Personally I find the Firestorm Redoubt dovetails better with Landraiders present an AV14 wall that negates all the S6-7 spam weaponry that nearly every strong list is built around these days.
So, would you recommend dropping the Epistolary upgrade on the Libby, one of the Tactical squads and the Aegis in favour of a Firestorm redoubt and another Raider or a Raven?