They might mean something to you, or make you feel intelligent, but there are simpler alternatives that will help people understand what you mean! Conclusion of the costs and benefits, and wrap-up: Balance the cost against the benefit, reinforce your point one last time.
Generally speaking, NGOs have more complicated proposals. Dear [Mr Ms] [Client. You may also wish to review our website at [Website] to see our portfolio of previous work and learn more about our organization.
Individual thinkers have begun to set out — sometimes in considerable detail — alternatives that emphasize fundamental change in our system of politics and economics. And what would it entail? Finally, we realize that you are very busy and wanted to thank you in advance for your time spent reviewing our proposal.