Most mods that use considerable work from other mods or elements from commercial imagery never get finished, so full-conversion originally styled mods are even more rarely completed. We'll get there
That's very strange...
Well, you can try it out by creating your own shortcut. Right-click on the BI exe in the Rome folder and "send to" desktop (i.e. create shortcut). Then right-click on the new icon and select "properties" and go to the shortcut tab. At the end of the target line put " -mod:bi/fatw -show_err -nm" (without the speech marks but with the spaces). Exit and click the icon to play.
Enjoy! The full release - coming later this year - has some significant internal improvements (and some visual) over the open beta, but still feel free to give feedback in the open-beta feedback forum. Thank you for supporting The Fourth Age: Total War.