Yeah theres really not that many reasons to be negative. Ole turned us around and since he took over, we've performed like ~ the 3rd best team in the league. That is our max level with this group, it's crazy to think otherwise. We made it to a CL quarter final and the FA Cup quarter final. We made a good account of ourselves in big games, but Barcelona, not surprisingly at all, were just way better than us. Theyve been way better then us almost every year for the past 20-30 or so years too. That's not some shock to be outclassed by a team that has the best player ever in their squad, especially considering all the problems we've had.
There is work to be done, of course there is. Nothing wrong with that though. It's not a 1 summer job, which is why it makes sense to extend loyal hard working and versatile squad players. Players like Young and Jones have survived this long exactly because they are loyal, hard working, versatile and have a good mentality, and with all the managerial turnover, each new manager will have no problem keeping them around initially and getting rid of the players with questionable mentalities.
Going forward with Ole I'm more optimistic than I was at any point since Fergie retired. We likely won't win the title in the next 2 years IMO, but you know that Olr will have the right mentality and try to build us in the right way, playing the right style. I had no faith in Mourinho because his ideal side with endless spending isnt what I ever want to see at United. Van Gaal's ideals were also way too boring and slow. Moyes never had the right mentality and never knew what was required. Patience is needed because we do have a relatively young squad, we have some extremely promising players (who do need to work hard themselves and make the step up as well), and with all the turnover we'll have, itll take time. We will almost definitely see around 15 players leave over the next 2 seasons and the summer before the 3rd, and then bring in ~10 hopefully. That's what is needed over the next few years but as long as we see steady improvement, everyone should be happy enough.
Everyone loves complaining about how shit the last 6 years have been, but it really hasnt been so bad since Ole took over. Ignore what happened before, it doesnt do anyone any good to complain about anything that happened previously, it's a fresh start and things have been relatively good again, though clear at the same time that work is needed.