Thanks for the constructive criticism @nameless-berk! I appreciate any kind of response to these designs. I agree that it wouldn't function too well in heavy rain, but I think that's okay, it just depends on the specific climate of where it would be installed. For instance I live in Los Angeles, where it never rains, so it's much more important to provide protection from the sun instead of protection from rain, and I think this design would be a pretty effective source of shade. I wasn't really interested in providing seats because for me the best part about visiting a park is lying in the grass. But maybe I'll build in some seats on some future designs.

Also, I think protection from the elements is only one small part of what makes gazebos so great in public parks - the other factor is just providing a sense of enclosure in a public space. That's why even these old-school cast-iron gazebos (shown below) are still effective, even though they do absolutely nothing to protect you from the sun or rain. They designate a space for gathering even without protection from the elements.

Anyway, thanks for your comment!