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. 

The obvious answer is that taverns are a meeting place; it’s where people in the town gather. Thus you can generally find people there, and some of them might want to offer you a job. There is something a little deeper going on, but I couldn’t put my finger on it