Dynamic return_url

1. What is the general goal of the feature?
After submitting their answers to a survey, user should be redirected to different sites depending on his answer to certain question or perhaps questions.

2. What are some example use cases for this feature?

For example, if there is a select_one question in a survey for guest's stay in a hotel with options "bad", "neutral", "good" and "great", I would like to be able to redirect the user depending on their answer to that question. If the answer is "great" I would perhaps redirect him to hotel's page on Booking.com, and if the answer is bad perhaps redirect them to my company's website where they can write a detailed description about their stay.

3. What can you contribute to making this feature a reality?

I am currently developing an application that uses ODK for creating surveys, but I have not modified any ODK code, though I do have experience in Java and Python. I want to know how feasible would it be to implement such a feature by changing ODK code? Is it already possible to do it in some hacky way using the url or tokens?