My one worry is that destroyer lords don't allow crypteks, and without the haywire I'll be hard pressed running into multiple landraiders or similar high armor heavy lists. Do you have any experience with this dilemma?
I tend not to use crypteks, as you can sink alot of points into them in exchange for only a few gimmicks. I do the exactly the same as Idaho, And use X2 units Of 3 Heavy destroyers. With there high strength, low AP weapons and preferred enemy. Vehicles don't tend to last long against them.
With my Wraiths, I lead them with my destroyer lord. Equipped with a SW (so i can soak up some wounds) and MSS, I never leave home without them. Picture this,- The destroyer lord charging into a unit backed up with wraiths, the destroyer lord challenges the IC and makes him
'TWONK' himself, while the wraiths cleans up the rest of the unit. your opponents face when that happens will never get old.
Charging generic terminators Isn't a bad Idea. I tend to find that It's the IC and TH/SS terminators that give me trouble, and again I use my heavy destroyers to try and soften up the unit before charging. Remember there high strength will most of the time be double the toughness of what ever your shooting at which will negate any feel no pain.
Hope that helps.