* How visual is your head? Do you see someone's head also from behind?
* Do people know it's a person or do they think it's an AI?
* Do people know you're a visitor or do they think you're a researcher?
* It's small. Would making it bigger already help?
* I say excuse me when I want to pass through. How good is the audio to convey that intent?
* Do you see your surroundings good enough? People are smart in finding their way, so might see a different route you can take and don't step aside because of that.
And probably a 100 other things to research and improve!