I think our frontend tutorials are the closest to what we can call “model zoo”. I agree that having more collection of ready-to-run models, preferably with auto-tuned config, would be valuable.
Recently I looked at the model zoo in openvino and I was impressed with their collection and high quality demos, many of them involving video input and output, that actually work. I wish similar demos existed for TVM but preparing them would surely be a full time work 
@tqchen @jknight