There is no substitute for getting yourself in a pickle and trying to problem solve your way out of it. Especially when you're it. There is no support.
Airline environments are well structured and sop orientated. It's not the place to push the envelope and develop your character. It's not hard to say choice worlds and read ECAM.
I can say personally after 1000s of hours of charter and regional work that many skills I acquired come in very handy in an airline environment. Especially the monkey on your shoulder. When it doesn't look and feel right, it probably isn't. You develop a strong bull**** radar. Especially in Asia. This was well honed in community charter work.
Don't feed the monkey.