Sara Nelson (AFA prez) would probably prefer her FA's not have to interact with passengers at all. This is probably a pipe dream, but I wish that FA unions would come to terms with despite them blindly repeating that they are there "mostly for your safety" they serve a customer service role. You serve food, drinks, and quell minor arguments between customers. In the microscopic chance there is an actual emergency, given how save air travel is, I highly doubt the difference between my survival or demise is going to be due to them.

As for the call button, I like the window seat approach above. I'm an aisle seat guy and generally like stretching my legs once in a while, so I don't mind asking for a drink or whatever I may need when up using the bathroom. To add, I find most FAs are generally friendly folks who want to deliver good customer service, and then you have a minority that are lazy and treat pax more like a nuisance they have to tolerate.