I think this post is very interesting and I must say this matches a lot of the fears that I have with the Mourinho appointment. I have always thought that Mourniho is the complete opposite to what we believe in as a club and for that reason I've never been happy about the thought of him as manager. I've now accepted that he will come in (99% sure) and I think I'm living more in hope that he can somehow fix it all but I fear the reality will be nothing close. If he isn't a success what then? I've only seen people say he will make us brilliant once again but I think there is still a good chance he could fail and from there the future looks very uncertain.
If he fails, or even if he's a success, he'll leave at some point and the club will be empty again, so we'll look for another manager even if he's the opposite profile. This is what Real Madrid does, and with our businessmen ruling the club we are in the same bunch with them. Perez appoints Pellegrini, and the next year he signs Mourinho. After this he appoints Ancelotti, and then Benitez. Now, in the middle of the season he gives the role to Zidane who wants to play a more positive and open football again, as Ancelotti was doing before he was sacked.
When we talk about the 'long term' concept, I think some people thinks about sticking with a manager for 15 years, and this is not the key of it. The long term factor has to be in the club direction, and even if all your managers remain for just for two years, for any reason, at least show some consistency and look for a common factor between them, so you don't go from black to white every 5 minutes.
That's why I think the power has to be in the club, not in the manager. Managers come and go, and sometimes you don't have options. But if you look at Barca even with Tito, Martino, Luis Enrique (who did nothing remarkable before) they are always in the fight for everything. Every manager who goes there doesn't have to start from zero, they are driving a flying rocket since the first minute. They serve the club interests and reinforce they values and convictions, and this is what gives them stability.
That said, I can understand some worries in the board about the club's failure in the last years. The money from sponsors is in danger if we don't make top-4 this season and the next one. We have problems to attract top players even if we offer them all the money in the world, so I'd said we're also losing attractiveness.
From that point I could accept a bit more of urgency now, and appoint Mourinho to make us recover some normality after the mess we've been recently. And from that position we'll be able to build something for the future. But honestly, I don't think the current board will know what to do at that point, so I think we'll look for the flavour of moment to solve all our problems with his sole presence, like we are doing now.