From WB's perspective, the problem with Superman Returns was it was not nearly "macho" enough. That obviously won't be the case with a Zach Snyder Superman movie. However, I hope he will be kept from going too far in that direction by The Nolans and Goyer. I think this could be a happy marriage between seemingly divergent filmmaking styles.
My only problem is that I'm not sure Snyder can make Superman his in the same way Nolan made Batman his, Raimi, Spider-Man, Singer, X-Men, etc. I think that's very important.
This seems to come more from the Transformers business approach, which is to take extremely talented filmmaker (Nolan, Spielberg) and have him shepherd a talented visualist who is weak on story and character (Bay, Snyder). Superman is a way more important (and complicated) character than anything in Transformers so he deserves better. This is a genuine American icon we're talking about here. But I guess the influence of Donner was so great, no other director right now feels he can truly make the character his.
However, In Nolan We Trust, right?
Monster Zero's "Most Naive Person About 'The Business'" for 7 years running!