Formal logic is interested only in the way in which the argumentation is carried out, without any reference to the truth.
This is a serious disadvantage in comparison with the Rogerian argumentation.
The Internet has become the most popular place for exchanging opinions, rejecting given theories, persuading the audience in ones own point of view.
It is a piece of cake to publish and disseminate information, instead of conducting a good discussion which is based upon rational argumentation.
An outline for a Rogerian essay will be a useful means for organizing your text into one integrated whole, without the risk of omitting important information.
Your outline will be of use only to you; hence, you can write whatever you want, provided that it will serve as the basis for your essay.
For instance, the topic is "free tertiary education".
The next step is to formulate it precisely: Free tertiary education as giving more career opportunities.
It is recommended to have such a formulation, which indicates your thesis.
Of course, you are not obliged to formulate it in such a manner.