I don't think Drogba enjoyed playing under Scolari. He's been injured for much of the season and he wasn't being given a solid run in the team under Scolari. Under Mourinho in his first two seasons, we played with wingers that actually went to the by-line and pulled balls back for Didier to do his business - either score or lay it off for the likes of Lampard and Tiago and Essien who were supporting him at the time. Then, he totally flourished when he was partnered with another top striker who he could lay the ball off to. Now, Andrei Shevchenko didn't exactly find his feet at Chelsea but he was certainly another attacking outlet and he had a brilliant understanding with Drogba in my opinion - in the two years they were at the club together, they banged away 70 goals in total. It worked brilliantly because players marked Shevchenko because of his reputation, giving Drogba the chance to bring down long balls and feed it to Ballack, Lampard, Robben and so on. He was suited to playing in that formation and because players marked Shevchenko, he had space to get a shot away. In games like the Watford home match which we won 4-0, Drogba scored a hat-trick and Shevchenko scored the other, and in that game they played together so well it looked like another Hasselbaink-Gudjohnsen scenario.
Didier enjoyed it under Mourinho because not only was he moreorless worshipped by Mourinho (he was constantly lauding him and singing his praises), but the systems he played in suited him and we had the right players to utilise those systems to the maximum. Even under Grant, we were playing a similar system and Drogba still banged away 15 goals - not bad considering he was at the Cup of Nations and injured for a part of the campaign as well!
Scolari again played a system with wingers - but Kalou and Malouda are not Damien Duff and Arjen Robben. Sure, the formations worked at the start and we were beating teams out of sight, but the system did not suit Drogba. Scolari would try bringing him off the bench but he rarely scored because either he or Anelka was forced to play up top. Drogba prefers the ball being pumped up long - Scolari didn't like that. Scolari thought Drogba was his plan B but bringing him off the bench to play out wide was never going to work. Okay, it worked when it needed to against Cluj, but Drogba has scored only three goals due to injury, lack of form and being played in the wrong position with the wrong players in the wrong system. Malouda shits himself when someone comes to tackle him - how often do we see him beat a defender and run to the by-line and whip a cross in? How often does Kalou actually pull of a decent centre to one of his own teammates?
Hopefully, Hiddink will play a decent system that is beneficial to the player - because on his day, Drogba is the best striker in world football.