Honestly in my playthroughs in Civ 5 - I'd raze most cities. I hated the 4 gold per turn cost of the courthouse and if I wanted the city to be productive I could just buy a worker, workshop, and market right away with my new city. Heck I could buy a settler too in the late game for little. Now that costs escalate AND cities need districts to do anything - I keep developed cities more often from other civs. This seems realistic since when people took over Constantinople and other grand cities - people just renamed it - not completely destroyed the city and rebuilt a new one. What do you think?