- Publish/Subscription patten make widget communication more easier and more accessible.
- Promise way make asynchronous more clear and could be controlled.
- Query cache is very useful and make performance really good.
- Use pure EMCAScript standard and new feature also let our code more easily to adapt modern browser.
- Template Engine is too obsolete as current view, should change to more modern language.
- Each version upgrade is so painful for developer. Too much thing can't be compatible.
- Sometime, memory type subscription is used carefully to avoid UI mistakes.