I think that celebrating this season is a bit over the top, but I would lie if I said that I wasn't delighted when Bruno put the ball in the net essentially confirming our qualification in UCL. It was extremely important that we get UCL, for many reasons including financial, prestige and signings.
United should always target winning trophies, but that was not realistic for this season (the league trophy). It was not going to happen (and it won't happen next season too), so the season was always to build the team for the next season, and show progress. While I am not particularly happy on how this happened, and think that our qualification in UCL happened to a large degree cause Chelsea and Spurs were worse than us, at the end of the day, the results are those that matter most, and we got the result we needed. Of course, 66 points won't be enough next season, but we would have gotten more points if Bruno joined in the summer. With new reinforcements, I think that this squad has every chance on reaching 80+ points next season, which is what we can realistically expect and target.
So not much time for celebration, but at the end of the day it was job done, and if we win Europa, it would probably be the best season since SAF left (otherwise I would say it is joined third with LVG's first season). Not great, but the minimum requirements totally satisfied, played some decent football here and there, and I am more excited for our attacking trio than I was for any since Ronaldo-Rooney-Tevez. I think that the next season is gonna be quite better, though likely short of challenging for the two big trophies.