>This is what having a huge toolbox causes. Some people are going to write code using channels, me others will use async.

I don't know if this is a problem. Redundancy is good. If simple languages ruled, we would all be speaking Esperanto.

>Some people will use features that others don't care about. I end up having this argument with product managers who insist that because most people only use 60% of the functionality of a product, we don't need to implement the remaining 40%. You need more than one way of doing the same thing.