I think it looks great. Would have loved Henry Cavill to stay on but there's no way DC had any alternative than to start afresh ,and maybe I'm getting old but this is the look I want from a Superman film. Man of Steel was too dark, don't get me wrong, I like a darker Superhero film and would be fuming (and indeed was a few decades ago!) if Batman was done more childlike, but it's Superman FFS, the world is a depressing enough place at times, so if you can't have a feelgood Superman film then that just makes it that little bit more depressing. Yes there's things I'm not keen on like the possibility of too many other heroes (especially with hair pieces like that!) but already in the trailer we've seen Superman being a hero, there's a political aspect in there that could be interesting, he at least changes his hair with his outfit this time, but most of all it just feels like Superman and the colours and music are a big part of that. My favourite part about the triler was watching it with my 9 year old who turned round and said 'I want to watch that' and even if I'm still not 100% if a flying dog is pushing it, he said he thought that looked great so that's more than good enough for me.
Like I say, I'm not opposed to darker comic book films or even more adult based ones, as I still think The Winter Soldier is as good as any Marvel film and the DareDevil Netflix series up there too but Superman is Superman and should be the exception where this stuff is concerned.