I think you may want to consider focusing more on concrete goals, and what funding will provide to backers.

For example, see https://www.kickstarter.com/projects/tomchristie/django-rest... which is widely used Python library. In that campaign, it is easy to see how much time the author would be able to continue to commit to the project at various funding levels, and specific features they will implement.

Even if the commitment at a certain level is just being able to provide on-going bug fixes, this shows the value to the company rather than backing being presented as a thank-you for previous work.