I agreed with you until the CL is ours bit. I'm not sure if even Messi, Ronaldo and Neymar attacking force can gurantee a CL tie, get you closest humanly possible yes, but gurantee, no? Especially if you rest of the team is not up to par, or the coach isnt.
For example, even if their player quality has been less then usual insane standards in midfield and some in defence for Barca past 4-5 years. The main reason they arent competing for CL genuinely during that time is because they been hiring mediocre coaches. Still have Valverde.
We have Sarri. ALOT to prove.