Bush should allow a once innovative-turned-predictable running game to diversify. He'll be used much like he was in New Orleans as a receiver and a perimeter threat, but he could be a bigger part of the running game.
True reach of Bush trade
Bush also gives Miami the big-play potential it sorely lacks. The Saints will miss what Bush brings but his salary of more than $11 million was too costly for a player that wasn't a full-time stud.
The biggest issue with Bush is durability. If he's on the field, he's a perpetual threat. He's hurt too often, though, and that's why he was expendable for the Saints.
I like the move because Miami needs playmakers and some sizzle. Bush also will provide options for whomver plays quarterback. I just wouldn't expect sustained production because of Bush's injury history.