I am working on my empire army - and it is mostly 'older edition' figs. Looks pretty historical - but I think you have to have some fantasy elements to be somewhat competitive -- and it lookslike it is getting even more so. I have resisted getting carts & altars (instead I like artillery) but it is probably time to get into that.
I do have a great old pewter griffin - so I don't have to buy the monster one! The Demi-Griff knights look interesting, too - and the 'hunter' characters.