Over the next few years, things will go like this:
The negative posters will whine that there is no proof of anything having been done, and therefore will laud it over the rest of us during that time. E.g no new stadium will have been built and that secures certain posters more time to moan about the club.
When there is an announcement, or something actually starts to get built, they will find an alternative to moan about such as location. If on the waterfront, it will be too far to walk from X, or not big enough, or the design of the stadium isn't to their liking etc. Maybe the new ground will be given a name likes "The Emirates" to generate more money (so a positive for the club), but again that will give them ammunition to moan that we've sold our soul etc.