Anything is possible ... it just takes time and money. You would need to talk to a GC and structural engineer and have them look at your space.

You haven't shown us your actual room, so hard to say if the space might benefit from such a project or it would be a big expense without gaining much in return.

I agree... anything is possible. Also take into consideration that they need to be safety rated if they are to the floor, that will be an added expense.

What would it look like? This is the nuts and bolts of two options. A structural engineer will size the header depending on your location and the length of opening. Either an engineered lumber (shown) or steel wideflange beam can be used. Detailing its support, foundation, and connection will accompany it. The framer will temporarily shore the upper floor so they can demo and install.

10K++++ just for the structural modifications... Doesn't seem worth it to me.

Normally taller glass doors would allow more natural light in the room and a better view of the sky but since there appears to be a porch ceiling there woud be little or no benefit.

Time and lots of $$$. Lots.

You may want to wait until you build your next house.

Floor to ceiling glass windows have to accroding to the safety code and the glass should be of the best kind for safety purposes.

Expensive modification to be certain.