Easy - in term of work (no models/no animations/no textures - maybe just an aura) - not balance.
And sooner they add the items - the easier will be their ballance. Adding them when current units will be closed or another faction in progres - will be more complicated.
as for:
an item that gives +something on a stat or an additional ability can't cost the same AP if you buy and use it with your Worg or your Fang! A +1 TOU on a Worg is not the same as a +1 TOU on a Fang, and considering "additional abilities" it is more or less the same discourse.
You must only balance them for 'strongest' unit possible for the item (not exacly in term of ap but bonus usefullness).
I want to see items asap becouse propably they will be woth farming for them
and currently i already have everything what i need and can only play for the rankings
ign: Draconnor, Cynwall player, 23 years in computer games, 14 years in battle games, 8 years in Confrontation Universe, 4 years of making own battle games.