Way too premature to declare that. Seen many teams blow their load only to not have the team gel.
I'm certainly hopeful since they've agressively looked at addressing areas of weakness, but our receivers and kicking game is a major question mark. Fortunately those are two positions that you can sometimes find cheap unknowns that can do well with the opportunity, but those positions can also easily lose you games if you don't get some reasonable talent. Fortunately Hervey has found some rookie gems at the former position. Not sure if he's got the chops to find the latter, but hopefully a Special Teams specialist as head coach might be able to give some good advice on what to look for.