It's the same thing as before, different writers handling different arcs....except they'll ALL be writing their comics with the word AMAZING on the cover.
They could've assigned these teams to Sensational and FNSM and it'd be just the same, if they had wanted to correlate better between the books, they could've. I remember times when Web and Spectacular all had sotrylines that interlapped and kept the continuity of the others. So it IS do-able. Marvel HAS done that.
They'll be relaunching Amazing back into other named books in a year +/-
That'll give them new #1's to market....once the "thrill" of Amazing 3X slows down and creative teams leave after their ARCS and it gets harder and harder for MArvel to one-up themselves in creative team announcements for their next "ARCS" of Amazing.
That all being said, it could be good to see Slott on Spidey. However, i hope it will be HIS writing, and not too much of JQ's forced "input" to destroy the marriage no matter what and keep it destroyed.
Spidey regaining his secret identity does need to happen tho. Retconning of a few other things here & there would be nice too. Having a mindwiped MJ walking around clueless not realizing she is married, and becoming a superhero to boot, is NOT gonna earn my money regardless of who draws it or what title they slap on the cover.