There's no point thinking positively - whether the album succeeds or not is all up to Mike and the band.
Opeth have clearly run out of new ideas which made the first few albums successes. If Mike remains lazy, simply throws repetitious 'riffs' together and relys on Steven's knob-twisting to make the paper-thin compositions appear sophisticated the album will fail. If, however, Mike works really hard, prepares early, and maybe reads some books on how to compose music instead of just emulating his idols it will be an interesting listen. Either way, i'm looking forward to it. Good luck Opeth, it won't be easy.