All your lists have good points to them how ever i also ran crons for our league ( we just moved to 1k ) and at 750 i lost just one game to a
DE player who just managed to out run me the whole game!!
think you might benefit from reading my list as an idea for your own league, it has a bit of everything in all the right places and uses prob the best two unit in the codex --- wraiths and deathmarks---
HQ
Overlord,
MSS , warscythe and semp weave.
CCB
Court , Harbringer of Despair ( goes with deathmarks
ofc )
Elite,
5 x Death marks.
Troops,
9 x warriors
9 x warriors
Fast Attack,
4 x wraiths all with whip coils.
now i either pushed for mid field with two blobs of warriors or sat them on home obj depending on mission etc, the lord on a barge at this point
lvl is devastating AV13 barge and a scythe flying over ppls heads is sweet. wraiths pushed for nasty units you know will destroy ur warriors etc, even if you think they will lose have faith in them and run then in watch them tie up any unit if not kill it pretty dam quick. deathmarks what can i say with the cryptek is a awsum unit and at any point
lvl almost an auto take hide them in a building in ur deployment to cover an obj and mark a unit you think will get there quick or deepstrike them into back field to clear opponents obj or kill a unit dug into cover remember the template wounds on two and ignores cover!!!!
trust me this list is nasty and a complete beast in almost every situation be it a heavy
av army you face -- plenty of gauss or even a horde army everything rapid fire and if ur concerned use deathmarks on a huge blod of orks etc and watch them fall to plenty of rending shots!
good luck mate and i hope i have not put a spanner in the works but i do highly suggest running this list!!!
anymore questions etc on crons hit me up man i love the rusty robots