D&D is an experience machine. Through role play, we get to be adventurers: People imbued with more power, responsibility, and choice than your average citizen. If you so choose, D&D can also be used to experience deep moral questions that permeate our society. 

I like the idea of the template system where a DM can quickly change a monster’s level to suit the needs of the upcoming combat. I was wondering if we could do something like that for 5e.