Maybe something like this but with the TV mounted lower on the bracket. When not in use it would be store horizontal. This would require some way of holding it level as the weight would be lower than the pivot point. You could make it so it moves more than 90 degrees so it's angled down for better viewing.
This post is my opinion (free advice). It is not intended to influence anyone's judgment nor do I advocate anyone do what I propose.
Sold 04 Dynasty to our son after 14 great years.
Upgraded with a 08 HR Navigator 45โ...