MSU is the key in this meta, I would split up a lot of those squads, also you have some questionable wargear selections. Archon for instance has a wwp, why? Are you going to DS him with WG? I would drop him for lhamean in a venom w/splinter cannon, split up your troops into two venoms w/splinter cannons. Drop beast back, not that useful, maybe some reavers w/cluster caltrops or scourge w/haywire blsters. Talos are pretty slow, DE is all about speed. I would drop for some ravagers w/triple lance. Eldar cad, I would get a farseer w/spear on a bike, scatter bikes are fine, might have to mess with the numbers, wraithguard throw in a wave serpent w/d scythes. Not too much experience with craftworld eldar. There is alot of information floating around as far as optimal formations and what is overall goal. But, that would be a few observations. GL.