The vehicle in the photo has clearly been processed, and is ready for handling or shipping. Not sure if the photo is after-flight or perhaps before.
>rusty
The "rusty" parts look like crevices between protective tiles being sealed with kapton tape[1] - general protective material that handles well extreme environment, and is often used in consumer electronics, especially in places where high temperatures are expected.
>duct tape looking stuff on the wing leading edge
Looks like temporary protective coating of foam, for safe on the ground handling, to prevent damage to the wing leading edge. If the leading edge is anything similar to Space Shuttle's, it's hollow inside, surprisingly thin, and somewhat brittle. Any cracks or damage would cause risk of overheating during re-entry, thus need for extra protection.
--
>rusty
The "rusty" parts look like crevices between protective tiles being sealed with kapton tape[1] - general protective material that handles well extreme environment, and is often used in consumer electronics, especially in places where high temperatures are expected.
>duct tape looking stuff on the wing leading edge
Looks like temporary protective coating of foam, for safe on the ground handling, to prevent damage to the wing leading edge. If the leading edge is anything similar to Space Shuttle's, it's hollow inside, surprisingly thin, and somewhat brittle. Any cracks or damage would cause risk of overheating during re-entry, thus need for extra protection. --
[1] https://en.wikipedia.org/wiki/Kapton