I don't think that's bad though.He's definitely treating players differently from others and it's been noticeable since he arrived. Just listen to how he speaks about Sanchez.
Like a good teacher, mentor, coach he will be able to see and understand what each individual wants or needs. That's a good thing.
Noni last time got a kick up the butt and in the next game was 100x better. In an interview he said sancho is the type of player that needs love. I'm guessing mudryk too, also sanchez was love and trust (he performs better when we trust him, something like that). He's mentioned a few.
And it makes absolute sense. Each one of us is different, different triggers, views, motivations, etc.
What's good is he knows and recognizes all that in each of his players in the relatively short time hes been at Chels. How many of us have had sh*t teachers, bosses, managers, etc...lol
On a side note...Add the above to all the work Maresca has done in 4 or 5 months. I'm even more impressed with the boss btw.