Thank you very much for your feedback, which I have shared with the rest of the team.
EF Class has a ton of great content out of the box, including grammar lab lessons, which should make your task easier. However, I understand that you are looking to further customise your lessons. You can already create your own Poll, Discussion, Multiple Choice and Writing activities, and we plan to release more activity types in the near future. We'll keep you posted!
Thank you once again for sharing your thoughts with us, it really helps us stay on the right track. Let me know if you need anything else.
The EF Class Team