No. It takes the open airiness of the great major design feature cantilever and turns it into the glass vestibule of a grocery store. It ruins the design of the home entirely. The cantilever is the whole point of the front elevation. Neutralizing that weakens and commonizes the home. You might as well be adding one of the pringles towers that dominate current bad NeoEcclectic “design”. Would Falling Water be more functional with the cantilevered patios enclosed? Sure. But that isn’t the point of the design. The point is the building block balance of the cantilever. Hire a good architect with an affinity for MCM.

Aesthetically, turning the carport into an entry patio will make the door easier to find. However, living in an area with snow, I can understand perfectly if you would find that solution unacceptable since it would reduce both the size of your parking area and the only covered parking, necessitating snow and ice removal from vehicles after every storm. That can be time you don't want to spend if you are late for work. I think one key would be to have the entry door very well lit, perhaps with an overhead skylight for daytime, but with bright, period appropriate fixtures regardless to signal to visitors that this isn't just vehicle storage. It looks like now you center the vehicles when parking in the carport, and I would start getting in the habit of parking as far over to the right as possible as another signal to visitors that there is a passageway into the house there. Having a dedicated paved path that leads to the house and then jogs over to the right to continue into the carport and door would also be a good signal to visitors which way to go. I would use a consistent paving for the walkway from the street or public sidewalk all the way to the door that is different from what is used for the driveway and carport, which may not be period appropriate, but will be another signal to visitors to distinguish path vs. driveway. If budget is tight, perhaps reuse of the parking pad brick would work for the walkway. Regardless of what you decide, keep in mind snow removal and where it will be placed that isn't on the path or driveway.

it's a really cool door! a little too "flower power" for such a sleek modern exterior, but painting it will make it look better and be a nice holdover until you could afford a new door. (and keep the old one, I really do love it. maybe it could be repurposed somewhere else.) I'd suggest a new handle set too. updated but not too modern (anything too hard edged might look odd with that flowery design). such as this one from kwikset? I think it comes with a keypad version too if that's what you want. you can always relocated it to the new door when if that gets replaced.

Grrrrrr, my ranch is white with black windows. Put a lot of thought and money into remodeling our downsize. Last year a couple bought a house, within eyesight of hours, and copied my house...right down to the design of the muntins. I am still grinding my teeth. I like all black, but your house isn't that big so wondering if you should go with a lighter charcoal and do the trim in black. I'm afraid everything black and you will lose the impact of the windows.