Well you may want to read this link which may address your first complaint existing languages. http://spiderlang.org/#why-spider I think package management

Well you may want to read this link which may address your first complaint existing languages. http://spiderlang.org/#why-spider I think package management is well handled by npm on node and browserify on the browser. projects like grunt make deployment a piece of cake. framework interoperability is just like in any other language, it's up to individual library maintainers. Personally I've rarely had issues with interoperability. On the plus side I think on that same link you'll find that Spider works happily interops with vanilla js. One way we could look at it is this; all these languages mean there is an option for everyone. I think if you look at the list of langs you mentioned (throw in vanilla js as well) you will find one that really speaks to you.