Well, one thing we learned from Enterprise. Even gangsters are better than Nazis.But, enough about the Cardassians.Using Nazi knockoffs is the ultimate lack of creativity in casting an antagonist.
Neither TOS nor Enterprise used knock offs. In Enterprise the Nazi were actual Nazis. In TOS they were "neo-Nazis" I guess, but very true to the ideology.

But I rather enjoyed those scenarios, except for the whole tedious temporal hot war thing. However I like the beginning of Storm Front part 2, that mockumentary.