James Gunn generally knows what he's doing and I'm sure the movie is fine.
But a film that cost $225M to produce and another $200M to market on a franchise that's nearly a century old and has always been box office gold... If it doesn't turn a cool $1B the studio will consider it a flop. That its cruising in to the box office third place behind Minecraft (predictably disappointing) and the Live Action Lilo & Stitch (Christ, Disney, just die already) is... eh. Not a great sign for The Movies generally speaking.