So you are saying that Justice League of America is being replaced by Justice League of Canada?
I have been buying the former since it's newest conception, and wasn't aware (hadn't heard) that it was ending. Although it has been an interesting series, Amanda Waller's influence gave it its dark feel; without her, will this book feel ANYTHING like it has?
The one bad thing about JLofA has been its lack of characterization. Its been hard to care about the characters, because none of them have been focused on; if yuo aren't getting the heroes' individual books, then you still don't really know who they are at all. Hopefully, this aspect will change.
Talk of a young/teen Canadian hero, somebody new, making it onto the team, is both exciting, and makes me wary. Teenagers are all fine and dandy in comics, but don't usually fare well in a book packed with adults (technically, i think Vibe is a teenager too, but not sure how his heritage/background will mesh with being in Canada...). Besides, if they are adding Canadian heroes, I'd rather see DC use (make up) an iconic figure to proudly represent the great white north, a la Guardian with Marvel.
I'm very hopeful about all of this; and I will definitely be picking it up. But only time will tell if this is an abject failure, or something to be proud of that lives on.