I expected him to buy better players in the first place. Apparently they weren't available, buying Blind and Rojo is a good example. But there is still no excuse. You can't outplay City with Blind and Fellaini in midfield, even if you have RVP, Di Maria, Rooney and Adnan in your squad too. Chris Smalling tried to replace both Vidic and Ferdinand and completely lost it, because Shaw, Rojo and Valencia aren't leaders or experienced enough at grinding out results in top matches. Herrera has looked good, but at the moment I doubt he is going to be one of the best midfielders on the planet, while basically all the top teams do have some of the best midfielders in the world.
We haven't spent enough money. Not that I like spending so much, and preferably we scout players like Adnan and buy them when they're 16, or make a Vidic/Evra deal, or buy Strootman instead of Fellaini. But City have probably spent 200+ million on defensive midfielders alone the last five years. Yaya was a cdm when he came from Barca, and even without him they've had De Jong, Milner, Barry, Javi Garcia, Fernandinho, Jack Rodwell and I'm probably foretting some. It's ridiculous, like Chelsea they've spent billions on transfer fees and salaries the last years. If you want to compete with that on a structural basis, my guess is you need to spend at least 90% of what they spend, sad as that might be.
That's the money side, then there is the current squad. If you want to beat City or Chelsea for the title and decide to have Jones, Evans and Smalling as your CB's, buying Luke Shaw is strange. Talented as he is, he was also insanely expensive, and again if you're trying to be one of the best teams in the league and have the centre backs we do, you'd need Paulo Maldini himself on left back and even that would probably not be enough. Buying Shaw for the future might be a decent idea, but Van Gaal - and Woodward and the scouts and the owners of this club for that matter - seriously should get their act together and look at Chelsea or City and make sure we have a squad that has at least the same amount of quality. Easier said than done obviously, but I still blame Van Gaal for not coming up with a better solution than to try and make it work for at least half a season with a very unbalanced squad.
Don't really see what Van Gaal has to do with us having 5 points more or 5 points less at this time specifically, aside from the transfers. In terms of how he managed our squad I feel there are way more positives than negatives. Injuries are killing us and because of them and because of not buying better players in the summer we've lacked quality. But with a fully fit squad, we can put in a real good streak of matches. That sounds logical, the question at this point however is, can our squad retain near full fitness before it's too late.
Next year will be interesting though, you'd expect Arsenal and perhaps Tottenham or Liverpool to buy extra quality, Chelsea and City will be very strong. Hopefully Dortmund finishes outside the top 4 in Germany, so we have a chance Hummels, Reus, and perhaps we should consider Subotic and Gundogan. Van Gaal can coach all he wants, but if Arsenal enter the league next year with more quality/better quality players in all positions, we're obviously bound to fall below them. I just hope we don't get stubborn and try to make it work with limited means and the same transfer strategy as last summer.