have a look at The Grand Alliance forums - and the narrative and open play sub-forum in particular.
depends on what you're after - from what I see of the rules, Warcry certainly wont give you a Mordheim fix / flavour, and I find the rules hard to reconcile with what the guy in question was trying to do with Hinterlands (things like his 'realm master' option etc).
as well as Hinterlands there are some other things available (shardsfall / reknown or ruin) - I think most things are on TGA if you look around (look in the 'downloads' section - and choose 'all files' - there are only 5 pages to look through).