Not bad for mobile apps, but still sucks a lot for desktop support.

Also, really wished they've opted for a more general language like C# rather than Dart - but that's inevitable since Google needed to make use of their Dart language after they've failed to standardize it on the Web (and I think they don't want to use a language developed by Microsoft of all companies)

They've picked Dart because it was the only language that could have small aot binaries, hot reload capable runtime without compromise and most importantly because they could influence development of the language.

C# is one of the worst choices they could make at the time.