Moose is wonderful. Use Moose instead of Mouse.

Unfortunately, Moose has a compile-time penalty. Though significant progress
has been made over the years, the compile time penalty is a non-starter for
some very specific applications. If you are writing a command-line application
or CGI script where startup time is essential, you may not be able to use
Moose. We recommend that you instead use HTTP::Engine and FastCGI for the
latter, if possible.

Mouse aims to alleviate this by providing a subset of Moose's functionality,
faster.

We're also going as light on dependencies as possible. Mouse currently has no
dependencies except for testing modules.