Barca's signature on Europe's football in the last decade is immense. Not only did we earn the title to be called the best team in history (Pep's era) but we have owned the CL as well. It is all the more interesting, as RM is so much stronger in political terms than Barca probably will ever be in Spain. RMs political and media ecosystem can even make a Ronaldo win the Ballon D'Or, they invent new awards just not to select Messi etc.
While we bossed this year by winning the treble with a superb performance in the second half of the season (one goal was more beautiful than the other), they manage to spread discussions around the Copa Final (national anthem), UCL medals, Messi's tax issues etc. The reason why Pep had such a hard time under Rossel and his management team, was that he never got support from them, no media support, nothing. They never ever defended Pep or our team in front of RM, and this was at a time where we humiliated them almost in every match. This is the reason why it is so hard probably to be a Barca coach, after all not only the internal pressure is there from Barca's side, but also the external one, where nobody really supports you in holding off the pressure.
The best thing probably would be to hire a psychologist for the team so that he can coach our players.