Re: Clark/Diana
Personally, I would say it isn't anything like Black Panther/Storm getting married.
Black Panther/Storm had none of the sort of history of working together and being in a team that Clark and Diana have in the DCU, and required a Storm miniseries to retcon in their first meeting and having sex together, as I recall, and then we were put through a bullshit story arc where Hudlin seemingly suggested a number of brides for T'Challa when we all knew it was going to be Ororo.
Given this is out of continuity, this is a chance to concoct some sort of feasible Diana/Clark romance, as much as I'd hate it. It'd just require the right writer to do it. I think it could be a promising idea, but, more often than not, it's been done badly, which naturally puts people off.