Thank you for your valuable feedback. We are always on the lookout for ways to improve our products to better meet the needs of our customers. We've taken note of your suggestion to enhance the armrests and add a headrest for this model. We are committed to providing comfortable and ergonomic seating solutions, and we will consider these features in our future designs. In the meantime, if you're eager to find a chair with these features, you might want to check out our Doro C300 and C300 Pro models, which offer the armrest and headrest support you're looking for. Please continue to stay tuned for updates on our product enhancements!