You won 4 of the last 5 Champions Leagues despite not having enough quality to pull off a feat like that. I don't believe I'll ever see a team do something like that again, it was incredible what those players achieved.
I'm not saying those are crap players, just that a lot of them are overrated because of what they achieved, their reputation comes from their trophy cabinet rather than what they show on the pitch.
Trophy cabinet's aren't built without the quality on the pitch. They were a brilliant team, which was spearheaded by one of the best players of all time. Don't know why you are slating them, but even yesterday - they had moments of quality.
Their problem right now is that - Ronaldo was a real force of nature when it came to being chips down. (See the match between Empoli and Juve). When it was tough, the squad always knew that he could change the game in a moment.
Now, they have a new manager and a squad without their talisman. The others need to step up and share the load around. It was always going to be an adjustment. With a new manager - its even tougher.
You seriously think a squad of Sergio Ramos, Marcelo, Ronaldo, Modric, Kroos, Bale, Benzema, (James, when he was there), wasn't a great squad. The entire united fan base would be over the moon with any one of them coming over to this United squad (perhaps, except Ramos coz of his general antics).