Think about your goal, what you're trying to achieve; in essence, your thesis statement. You are conducting research to explore an issue and hopefully find a viable solution. Think about:
Yes. There will rarely (if ever) be a solution proposal that has absolutely no negative consequences. It's important that the reader knows you have carefully thought through possible results of your proposal. In the real world, if you were to submit a research proposal to a company and you said that there would be no consequences, they would probably not believe you. Instead, they might become suspicious of your intentions and infer that you have not done enough research.
"For every action, there is an equal and opposite reaction." While Newton's third law was intended to describe physics, it describes many real-life scenarios as well. Think about your intended goal (your solution), and what you are proposing to accomplish that goal. For every change you intentionally initiate, there will be other smaller changes that also must take place. Consider the changes you're proposing from every possible angle. Think about:
You will have to write refutations providing evidence that justifies the consequences and possible objections. Make sure you use logic and reasoning, and avoid any logical fallacies.
Use the links below to learn more about writing refutations, using logic, and avoiding logical fallacies.