The ONI Korps are units on the release schedule, but the schedule has been revised to allow for the production of the much needed revised rulebook. Everything may be on hold but you can get your mercenariy troopers earlier by proxying some guardsmen or converting your own. First off is it worth while? There are two types of ONI Korps, ONI Korps
TH use Therians weapons, the firepower is good especially because the basic gun gets a reroll but the heavy weapon doesnt do anything a Dual Light
MG cant do better. ONI Korps UN cost 25pts more for the unit but have a melee better basic accuracy, though without reroll and a a pair of lascannon. The latter are more useful becaise ONI do not lack for anti-infantry weaponry, they dont lack for anti-vehicle weaponry much either, but they do lack anti-vehicle weapons amongst their other bulk infantry units. Thus if you want anti-vehicle firepower with a cover save and numbers to last then ONI Korps UN can have a role in your army. In general I think ONI Korps will be good for hiding infantry characters, but they arent really necessary except in MercForce lists and MercForce is to be avoided
IMHO. Zombies and vehicles are the way forward, ONI Korps are good but largely extraneous. Thus one or two units as an elite rearguard to put your zombie horde in perspective is all you need. This suits me fine as a mass conversion will be a little bothersome and will allow armies to be built almost entirely from Army Boxes plus Enforcer/Samedi boxsets. What I am thinking of doing (I havent budgeted for buying any ONI yet, but its all planned ahead) is using spare UNA Steel Troopers from the Damocles boxset (I have a fair few) and replacing the heads with gas masked helmets from Pig Iron:
If you didnt mass buy Damocles boxsets in the firesale, or you cant spare any from a UNA list you can still buy UNA Steel Troopers from Miniatures market as bitz, near bottom of page linked:
http://www.miniaturemarket.com/at_43_bitz
This way your baseline figure is a Rackham product so you should be OK for tourneys and will be correctly based. All you need do now is convert up a heavy weapon, do a little painting, and you have ONI Korps UN. For ONI Korps
TH you need a bit more work but dont bother trying to use Therian weapons, ONI uses Therian tech but manufacture differently.
ONI Korps
TH