When reading this your op post, what mostly caught my attention is this three highlighted statement here, first and foremost you need to understand that this is a financial transaction, and it's very important for surveillance camera to be in place in case of any security breach, secondly, this your public Bitcoin kiosk of a thing is not going to work in the country because our government is not fully committed in crypto related activities.
How will you feel safe if you are buying or selling something to someone that is on mask?

A Bitcoin ATM would be much more better than this kiosk that you are talking about, and for that to be in place in our country, the government must the the brain backing it, but due to how hostile they are towards crypto right now, I don't see that happening soon.
But if our government can be more crypto friendly, I believe that the Bitcoin ATM will bring more awareness about Bitcoin to the general public in no distance time.