His life expectancy is around 13 years. He already has health issues. I don't think he should get implants or any major restorative work. There's "instant veneers" on Amazon for $10-40. He needs something like that, to change the way he sees himself in the mirror, and how others see him, when he chooses, without much risk or investment.

People want all kinds of things they shouldn't have. There's a bald 71-year-old visiting someone right now saying, "I want a pretty set of hair again". There's a woman wanting her breasts to be perky again. They need people with the boldness to tell them that surgery won't make them young again. This is a psychosocial problem, not dental.

He can get 99% of what he's wishing for with costume dentures. Why can't you outsource a customized set of that kind of thing, purely for cosmetics, so he gets a higher quality product than something from a retail store, but without stressing his health further?