The only way it would it really work for me would be if DC really committed to it in that our history, once Diana enters WW2, pretty much goes into straight alternate history since it kind of seems DC wants it both ways in this in that she was the first superhero but for the most part our world isn't that different until whatever the most recent generation is.
SuperWonder is the lesser evil of the two to me for largely the reasons you mentioned but yeah, definitely doesn't help "WonderBat" the reason it even has as many supporters as it does is because of a cartoon where crushing on Batman was the only memorable legacy she had on that show.
But we also live in a world where Kingdom Come and Injustice exist, which also usually involve fridging Lois, so Diana in a relationship with Superman has it's own unique problems lol.