I have bought the digital version of the Ice and Iron Supplement. The new campaign and fluff are nice but I am disappointed quite a bit with the profiles section. I have anticipated some changes to the profiles published in the original rulebook for balance purposes and additions of new profiles either because some warbands were already expanded and other may be in need to get more options. So far I have checked only the Forces of Nature and Trident Realms parts which interest me most, so my comments are on those. Apparently, some already existing profiles that were not in the original rules are missing. Just for example, where is the Centaur Bray Hunter, where is the Naiad Initiate? On the other hand, why are there exactly the same profiles of e.g. Salamander Unblooded or Forest Shambler in both books. Thus, we get some profiles twice in both books and some other (already existing) profiles are missing. Would it not be better to have only updated plus all new profiles in Ice and Iron.
I also thought some factions would be boosted by addition of new profiles. Maybe there are some as I am not familiar with many other factions so well. Though, I had a look at the Herd as I have this army in KoW too. I hoped the FoN centaurs could be played as part of the Herd warband, but they remain available only for FoN in Vanguard.