I am planning to look into the context of Ezekiel's section on this temple in the near future. All I remember at this point is it is prophesied to be built after Christ returns, but that doesn't make sense given the animal sacrifices. Those are not necessary anymore.
Ezekiel 43:7
New International Version
7 He said: “Son of man, this is the place of my throne and the place for the soles of my feet. This is where I will live among the Israelites forever. The people of Israel will never again defile my holy name—neither they nor their kings—by their prostitution and the funeral offerings[a] for their kings at their death.[b]
When Jesus returns to earth, it seems He will establish His throne in Judea where His chosen people will live with Him the way His covenant was intended to function within their society.
This section in Ezekiel also details Sabbaths, Holy Days, ceremonies, and even sacrifices (e.g. Ezek. 44: 24; 45: 17). My initial thoughts center around God's promises to His chosen people, Israel. They will live under the covenant God made with them as it was meant to be--a blessing for His people and an example to the rest of the world on how an ideal society should function on this finite planet. Jesus (and I believe David and the apostles, too) will be there to lead and guide the people to live in harmony with their God and yield all the benefits that come through observing the Law as it was intended to function--a blessing, not a curse.
How all of this will tie into God's eternal plan for the Israelites within the new covenant, Christianity, and the New Heavens and New Earth are fascinating to think about!