My first observation, is that you have nothing that benefits from "Matchless Agility", so making the list fit the "Decurion" restrictions is needless.
My second observation, is that since you have no benefit from Matchless Agility, and no meaningful benefit from Tempest of Blades, you should take your "Windrider Host" as a Combined Arms Detachment, as the benefit of a rerolled Warlord Trait and ObSec for your Bikes should be much more valuable command benefits.
From there, do you really want to take a Warlock, or a Vyper? If not, then you would free up those points and also improve your list.
Crimson Death is pretty expensive, but it does what it does incredibly well, and the free cover save is pretty amazing. *smirk* I was worried that Eldar wouldn't get free, amazeballs rules on something.
The six Wraith Construct detachments are certainly an unusual build, but perfectly legal [even if you use a CAD for the bikes]. If you drop the Warlock and Vyper, you'd have some points to play around with. I'd personally suggest taking some non-scatters. Your meta might reward sticking with pure Scats, though.
I might leave one of the WL behind, in order to take another Bike unit. By doing so, each WL has an escort with [potentially] ObSec. Also, while supported by the Scatter Bikes, they could reasonably take different weapons, to complement the already saturated Scater Laser selection... Maybe.