Wow this post of yours contains so much contradiction! Sorry have to point this out to you:
1. We are 7th this season not because we are 7th quality. We were 1st about 12 months ago with more or less the same team
We are 7th not because we had a bad team who could only achieve 7th.
2. The so called "need to have a major overhaul" is a myth. You get rid of Vida and who is better to replace him? Rio is older but is there another defender much better than him waiting outside OT to want to come in to sign for us?
And I can say the same thing about other players you want replaced. A major overhaul won't help us. The key is to get the best out of our players and a good manager can do that. A couple of new addition will fix in the next season as we always do under Fergie.
Granted, We don't have these two players next season and hopefully we can replace them under van Gaal but most importantly he needs to get our players confidence back. And after this terrible season, our players know their confidence need to be back and a new manager will only be better (who is worse than Moyes honestly?)
3. If we are still under Moyes, I would not have any optimism and the most from him is 6th or 5th. But he's gone, and everyone seems to agree LvG is a proven winner and he knows how to manage.
4. If you take 2nd now, you are happy with 2nd then fine. But to me second is nothing. If you know you can get to second, why not first?! Seriously who remembes who came second? You will ask me to be realistic but I am! United cannot let another bad season because once we let City get used to be winning, and let Liverpool be a challenger, it would be morse difficult to get back to be dominating like we did in the past 2 decades.
We must be challenging title, not aiming to be 2nd because we know being 2nd hurts so bad! It is no different from 3rd or 4th IMHO