I've said this elsewhere, but I'd kinda' rather see "Zack Snyder's Superman", than "(whoever else's) Superman - Featuring Zack Snyder", which is kind of what this is shaping out to be with Nolan/Goyer behind it et al. If Snyder really is going to to try and adjust his style/sensibilities away from what he's been doing, I almost feel it's better to go with a director whose style is more up that alley to begin with. Otherwise, just let Snyder do what he feels he does best. It might crash and burn, but at least it'll make some wild noises and explosions while doing it.
there are a number of really cool things htat Snyder does in his films that I'd very much like to see with Superman...it's just gluing all the pieces together into a good film with good storytelling that needs work. But if that's the case, maybe it's better to work on giving Snyder's style and approach better storytelling, etc., than to adjust/change his strongest assets to fit something else.
But maybe it will already be a great story to begin with, and Snyder will just bring some more visual impact to it....albeit in a more 'realistic' setting than he's ever done before, and so on.