Nah crons can't think of anything else but they also got wraiths/NL and mb flayeds and vehicles in t2 wich can be backed up by tomb spyders and destroyers but no one use this cause you can just select > overwatch > right click > gg.
Also necron is fast tech is scary but then again no use NL harras with mb 1 NW and some wraiths and if its really needed a tower. Then tech to some flayeds and go eco harras while tech straight to t3.
Fucked up retarded and deadly and really adapteble aswell cause you can decide to go more destroyers in t2 and mb some more NW sqauds wich you can upgrade with the 1/2 disruption field if required.


)



