Try Syntax::Collector as a way of enforcing syntax standards (and syntax extensions) onto all packages in your project.

package YourProject::Syntax;

use Syntax::Collector -collect => q{
use constant 0 { true => !0, false => !1 };
use Scalar::Util 1.23 qw(blessed);
use Carp 1.00 qw(confess);
use strict 0;
use warnings 0 FATAL => qw(all);
no warnings 0 qw(void once uninitialized);
no indirect 0.10;
use feature 0 qw(say state switch);
use utf8::all 0;
use autodie 2.12;
use true 0;
};
1;
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Then enforce a coding standard that all packages must begin with use YourProject::Syntax. This allows you to control all your boiler-plate imports and pragmata from a single location.