business_hours_feature.rb

require 'active_support/core_ext/time'

class BusinessHoursFeature
  # This feature is only available between the hours of 10am and 4pm
  def enabled?
    Time.use_zone('Pacific Time (US & Canada)') do
      now     = Time.zone.now
      am, pm  = Time.zone.parse('10:00'), Time.zone.parse('16:00')
      weekday = !(now.saturday? || now.sunday?)

      now.between?(am, pm) && weekday
    end
  end
end

module Features
  class NewRelicSingleSignOn < BusinessHoursFeature; end
end

Features::NewRelicSingleSignOn.new.enabled?

Nice! Any reason why you guys chose a class over a module?

module BusinessHoursFeature
  def enabled?
    # ...
  end
end

module Features
  class NewRelicSingleSignOn
    include BusinessHoursFeature
  end
end

No particular reason; my example was just a basic one. Module inclusion would also work really well if you want to combine feature aspects with each other. Though ordering may become tricky!