Interesting to read more about Zack's proposed WW1854.
Honestly, as intriguing as the concept reads, i don't think I would have traded it for what we ended up with with WW2017. As WW2017 was more or less true to what William Moulton Marston depicted with her origin, ect only trading the WW2 setting for WW1.
Having her in Crimea, globetrotting across the globe in search of Ares, taking on multiple lovers, eventually leading to Steve Trevor, ect could be a interesting story. Personally, I would eliminate the subplots of Diana having multiple lovers, with them ageing later having insecurities, ect. I think Zack would be getting dangerously close to "Pearl Harbor" love triangle territory with that stuff in a Wonder Woman movie.