I'll trade verbosity for braces and no significant whitespace any day of the week.
You format your code anyway, right? So what's the difference if it actually means something?
I'm personally keen on using % on vi or clicking on the braces for selecting scope in Eclipse and ACME. I also find them aesthetically appealing much like Lisp parenthesis.
The indentation works, more or less, but imho layout should be in a coding standard document not in the language specification. The problems I've had with Python's significant whitespace are maimed lambda functionality and for one liners (limits to if/else/loops/etc without braces).
(And I believe that import braces comment is a bit of a joke, it gives an error message "not a chance" iirc. :-) )