That's the main issue - in Trek the 'hell' has never been depicted at all, only talked about by characters. FC doesn't count because we actually saw nothing of the actual devastation.
Is there value in showing it in 'Saving Private Ryan' detail?
Maybe, if it's doing something akin to BSG and relating it to the contemporary issues today. But again, that's a radical departure from the normal Trek proposition and would not be to every fans cup of tea.
The darkness of DS9 is already disavowed by some as being the very opposite of what Roddenberry wanted to depict. A series set in this time period may well get the same reaction.
'If the Apocalypse starts, beep me!' - Buffy Summers
'The sky's the limit.....' Jean-Luc Picard, 'All Good Things'
courtesy of Saquist