Ok, let me see where I can help you:
HQ: First off no need for ghostplate, when you lose your shadowfield, ghostplate isnt going to save you. Also there is no need for a soultrap if you arent running a huskblade. As for the power weapon, what type??? why not just get an agoniser???
Also at 1.5k, no need for two HQs, especially two expensive Archons
Elites: Dont Mix and match weapons on your trueborn. Either run all blasters, or run dark lances. Both are decent choices, but pick one that fits your playstyle.
Troops: Low troops for 1.5k, and running your only 2 ways of scoring objectives at the opponent is a quick way to lose the game. Change one to warriors (you are dropping the 2nd archon right??? no reason to keep them wyches) and get some more troops. Also you must have 10 wyches in the unit to get a second wych weapon, not 9.
Heavy: What is the purpose of the aethersails on the Ravagers??? its a useless upgrade
The razorwing's base missles wound MEQ (your average toughness of 4) on a 2+ already, so the necrotoxin missiles are a wasted points as well. Also always take a flickerfield on a plane, as when you dodge, its a 5+ coversave, and you can only snapfire. The flickerfield gives you a 5++, so it makes you always have a save without the need to dodge and take the penalties.