My replies are below the relevant portions of your text.

"Do you use e-learning with your learners?"
Yes. Either additionally in a class with students physically present or in an online extension program.

Do you believe that more digital learning opportunities would be beneficial to your learners?
Yes. To what extent depends on individual learner groups and the programs they are enrolled in.

If you believe more digital learning opportunities would be beneficial to your learners, should they be used as a supplement or as the foundation of a course?
Both options are possible. Again, it depends on individual learner groups, programs and the environment within which e-learning is conducted. For example, e-learning businesses in ESL cannot be really recommended at this time. They are poorly equipped, disorganized, unethical in their business conduct and run by unqualified idiots who know nothing about education.