[RobertKerans]

The extreme modularization is a huge, huge issue. There is a slight settling: the recommendation for state management shifting almost exclusively to Redux is IMO a very good thing, if only for the fact of how brutally simple it is, with almost zero chance there will be any API changes. Packages such as react-router, with constant API changes, are a nightmare though. Standardisation this year would be good: state management (Redux), a router (a settled react-router), immutability (Immutable), a method of dealing with asynchrony/promises that's well documented and easy for people to just pick up and use, a drop in test framework (personal bugbear is setting up the multifarious bits of test/coverage/complexity tools - Ava + NYC + Plato seems a very good build so far for this, but it's very young). But it's the configuration of build tools which is the killer

React itself is very simple, but then so is jQuery, and having to pick apart the twenty or thirty jQuery plugins + associated spaghetti the last dev dropped into a project is even less fun than the current situation, it just took a lot less of a deep understanding of JS; one of the issues I'm starting to get a lot more of is devs dropping in prebuilt components, which is just jQuery all over again, but in extremis.