Just on the bolded part. Of course he has a say but the board doesn't always follow through. We know he wanted Meite, they wouldn't stump up the extra 200-300k needed to give him the salary he wanted. You know Lucescu wanted Chatzidiakos in the summer right? Deal was all but done, player was on his way to sign. Then at the last minute PAOK tried to change his wage by knocking off 100-200k and he said see ya later I am going to Denmark. None of these instances are Lucescu's fault. It is the club letting him down and leaving us with players who are worse (Lovern/Colley) or no one at all in the case of Meite.
I don't disagree with your next point, but you're all too keen to tear something down that has literally won us a third of our trophies in our history. I have said it before and I'll say it again. We are talking about Greek football, Jurgen Klopp isn't banging down the door to take over when Lucescu leaves. The next in line is probably a Portuguese or Spanish manager who we've never heard of, who has never coached at a big club or if he has had an unsuccessful stint there. The alternative isn't a world class coach.
Lucescu isn't perfect and I agree with you guys that some of his player selections and behaviour (this particularly annoys me) leaves a lot to be desired. His time will come but I don't think that it is now. Just my opinion of course.
He is being under resourced so I refuse to COMPLETELY blame him for what has been up until now a poor season. He can't rotate the squad, because there is no quality there. Ozdoev and Camara have been run into the ground. We have one CB who is trustworthy, the other 3 either are error prone or can't pass a ball to save themselves. So yes that allows any team, even Volos and Kallithea to take advantage and get results.
We are clinging on in the title race by a thread and as if the Slavia game already wasn't big it is now huge in the context of our season.