It's a good little DLC if:
A) You missed the Flying Machine Achievement
B) You are invested in the plot
C) You enjoy keeping people alive who don't know how to stay out of trouble
It just so happens that reasons A and B were my reasons of choice. They weren't enough to make it enjoyable, but enough for me to be content to sit and play it.
'Battle of Forli' sees you spending most of your time protecting two people. Which is fine until they part ways, go running off into danger, and after all that expect you to go and save people where you find the frustrating AI is frustrating all over again.
'Fun'? No. 'Worth the money'? Perhaps. 'Downright annoying'? Yes.