Really nice compilation of images and styles.
FE is looking great and I'm also looking forward to Warlock.
Agree with Magog about how great the sprites from AoW still look today. I finally think that with FE and Warlock around the corner I'll be able to put AoW away for good. AoW has been my favourite game since release.
Conquest of Elysium 3 does use a lot of the same races and style as Dominions but I think the art would have been re-made. From memory Dominions had a really weird set-up with its sprites where magenta was used for transparency. I think they are now using an alpha channel for this (which is what they should have done in the first place). CoE3 is a very enjoyable game that plays very quickly.
Of all the games I think FE and Warlock will be the polished releases but somehow I think we'll still be talking and playing CoE3 for longer as that game gets more and more mod-friendly.