I think as a currently Hypothetical question about if we do go up, I personally think lots of changes would happen the two at the top might not end up who ultimately owns us as we would be a more attractive club to overseas investors (Not that I want it to go that way).
With Wilder, he has mastery and comprehension and a set of players willing to go beyond for him, and don't see how that would change in the course of promotion, give it time we could even be in a position to challenge the higher clubs, which is what we have done all this year in the championship, are we not some where near the bottom when it comes to expenditure and wages and the like and yet over perform and push on?
I think the last visit to the Premier League might very well have tainted perhaps the view of what the premier league is, I am sure if you asked Leeds, Sunderland, Portsmouth, Bolton, Norwich, and all the others that have over time dropped out of the top division where they would be I am sure they would all say the prem, the shop window and coverage, being able to see your team any time actually getting Column Inches in the daily rags, all of which is good for the Club and the city.
I work in Watford and Live near by in Hemel, over the last 4 - 5 years the redevelopments and cash poured into the town is astronomical, it as gone from a dirty run down town to a reasonable place for both entertainment and shopping with in a few places the team being a focal point, there are still bits that are shit and probably always will be, but businesses and people would not pump money into the area without a good reason to do so.
and look at Watford as a team still have Troy Deeney up top still have a few others who made the promotion leap and Watford are a team that does challenge and upset a few of the big boys not every week but still I am sure enough to make those fans proud and feel on Cloud nine for that fleeting moment which when you think about it is all football gives us, fleeting moments of pure illation, some moments of despair and treasured memories to pass down as we grow older, We will still have those in the Premiership and the rest of the world will know as well.
I personally as much as its scary territory would welcome seeing us back in the top flight, and as a bonus I would get to see the blades a lot more too!