Some fedback from my end:

Now that we have Devel Declare and the other syntax extensions with sufficiently good sugar. The emphasis must be on using them as a set of standard(a step lower than defaults) so that people who program feel they are a part of the language itself(more or less like a default features). Currently writing lines of boilerplate code before using anything is a big problem. Also not to mention downloading and configuring all those modules is also a little problematic. Downloading and using something from CPAN gives a feel of using a library and not a syntax extension.

It will be nice if there is a out-of-the-box package of a sort that plugs these syntax extensions in to the perl installation. Without one having to bother about module dependency,downloading,installing and telling the project mates that its from CPAN. If backwards compatibility is problem it can be taken care of after all its just a package. It must be like download/install Perl and download/install syntax extension package and you are ready to use without having to bother about CPAN, boilerplate, modules, dependencies, versions etc etc. It must be like using Perl out of the box.

Quoting Larry Wall from here

My advice, if you want to have people user your language, is to do as much work on their behalf as you can.