Now i don't want to defend ranieri, i'm kind of objective to all this, BUT i'm kind of sick when everyone talks like he has coached juve for a decade. He is a coach, YOU are not, and if ranieri wants to sub DP, he MUST have a reason. Now if it's justified or not is another question, but just saying he does everything wrong is just not right.
Let me see what you are saying;
-tactics: i was kind of surprised how he played with 3 attackers up front. It worked out pretty well in the first half of the season and i realised that he did pretty well doing so, because we are so well set up front with DP, TREZ, IAQ and so weak behind, that it would be a mistake to manage the game from the defense; Instead he tried to move the game to the opponents half (with the 3 attackers stressing the other defence) and i think it worked out most of the time.
-Substitutions; well here i cannot say anything. From an outsider it was clear that he made some suspicious subs (bringing noce, etc etc) BUT we all do not know what he was trying. Maybe camo was injured, maybe he was not on form, god knows.
-He's reliant on the elite & bad transfer policy; Of course he is. I'm pretty sad at that too, but who else do you want to rely on? it's his first season, and please don't forget that it's their first season together (secco&ranieri). so, they may have done bad choices with almiron/tiago (i still consider the latter a possible starter), BUT we were all expecting something different; go read the forum posts about almiron and tiago; most of the people here rated them as "decent", "positive signings". They turned out wrong, but it's not that we screwed up a whole season because of that.
So, again, i don't want to defend ranieri, but please people; stop acting like you are coaches. Ranieri actually learned his job. He may or may not be a good 'juve-worthy' coach, BUT if he finishes in a CL spot, and we can compete with the top clubs in serie a, then i'm fine. It's improtant for juve to have a long-term plan, and you can't have such a plan if you switch coaches every season
I'm not talking just one game here... we're talking several. But okay, lets go through your defense of my allegations:
Tactics: Nearly every game starts as a static 4-4-2, with two defensive midfielders, one of which (Nocerino) has lousier passing than I do. They are reliant on the long ball, and for one of Del Piero or Nedved (two of the three oldest players) to create any kind of offense. Its a relief that he's starting to play to the team's obvious strength at 4-3-3. Not many teams can boast the type of quality Juve has at offense. However, he seems to have a habit of stepping off the gas and rather than continue to pressure, subs off the offensive guys for defensive guys and attempts to meet them in the middle of the field. The Fiorentina game was probably less notable of his tactical weakness than other games where the team has actually pulled through... what makes it notable is how bad the team has done since January with one notable exception, the Roma game.
Substitutions: I really don't care if Del Piero plays 90 mins or not. If subbing him off for Palladino or Iaquinta improves the team game, then by all means, sub him at 80, 70, or even at half time. What irks me is how often his subs suck the wind out of the team's sails. Sometimes, like with Boumsong, he gets lucky... but sometimes they're just baffling. Maybe its a depth thing... but if its a depth thing, he's to blame for that to an extent too, because he had two transfer periods, and let three very useful young players go off on loan in De Ceglie, Marchisio and Giovinco.
Elite Reliance: If I coached Juve, I'd expect my elite players to be my best players too. It just seems the whole system is geared to defense, and trying to cover up what is quite clearly, a mediocre at best defense. The expectation is that Nedved, Camoranesi, Del Piero and/or Trezeguet make something out of nothing while playing to the defense first system... which they do often, but top teams tend not to rely so heavily on their stars, especially as two of them are 35+.
Transfer Policy: Tiago and Almiron were decent buys at the time according to the Juventuz braintrust. However, at the time we had no idea what kind of formation and tactics Ranieri would employ. Knowing now that he's essentially a Capello-lite, favoring aggressive defensive minded CMs, bringing in players like those two was a huge waste of money. He even admitted that he only bought Tiago because he couldn't get Sissoko for a reasonable price. Had Tiago/Almiron been played in an advanced position and not the straight 4, they probably would have fared better. Both could still be salvageable longterm... but the lack of faith Tiago was shown probably killed his chances of being a star here, at least with Ranieri as coach. Sissoko is not a bad addition so far though, but there are glaring holes that Ranieri failed to have Secco address. Yes, its their first season, but as you so eloquently said, they're professionals, we aren't.
I don't think any of these things on their own is enough to remove Ranieri. However, I think if the combination of these four things are added by the team losing faith in him... then he has to go sooner rather than later. There are some guys that called for his head very early... I was not one of them. I was willing to give him, his crazy subs and consistent tactics a chance. But now they've blown a pile of points and allowed Fiorentina and Milan to get to striking distance.
And yes, consistency is nice. However, you don't keep a subpar guy around for consistency. I think if they don't beat Genoa, he's gone. Because if they lose, top 4 is becoming less probable.