Use about 1 lb mini iced Cinnabons ( or substitutes below) cut in half vertically to lay over the bottom of a well sprayed 9" springform pan.Put them in cut-side down. No need to cram tightly.
On medium speed, beat 32 oz room-temp cream cheese with 1 1/2 c sugar til light and fluffy, 2-3 minutes. Beat in 5 eggs, one at a time. Add 1/4 c. flour, 8 oz sour cream, 1 TB vanilla; beat til well combined and smooth. Pour batter over the buns; jiggle a little to get it in between any gaps in buns.
Bake 1 hour on the center rack, or til center jiggles just slightly. Turn oven off and leave it in there for about an hour. Remove and cool completely on a rack. When completely cool, spread on the topping, then the drizzle, in any pattern you like. I didn't do it in this photo but it's fun to use the drizzle to draw on circles like individual cinnabuns, so the top appears like a pan of buns.
As for the Cinnabons, no doubt, they are wonderful but pricey as an ingredient--- if you have an acceptably close version of frosted cinnamon buns available, use it. Here in the Great Lakes states the Meijer grocery chain's bakery department sells a wonderful ( and far less expensive) box of heavily frosted cinnabuns called Cinncredible, or something similar. Since they aren't "mini's" they'll be higher than they should be ... I trimmed about an inch off the bottoms ... the icing is really thick so there's no chance I'd have trmmed that! The buns shouldn't come more than 2/3 up the sides of your pan.
So here's the topping: Beat 3 oz cream cheese with 3 TB butter til well blended, 1-2 minutes. Gradually beat in 1 c. powdered sugar, then 1 TB milk, til smooth. Refrigerate til you're ready to put in on the cheesecake.
The drizzle: In a small nuke-able bowl mix 2 TB packed dark brown sugar, 1 TB butter, 1/4 tsp cinnamon. Then nuke it on high in 15-second intervals, til it's melted and smooth; cool just slightly, it needs to flow but be cool enough to handle. Place in a small ziplock bag, cut off the tip, and use it to make your design on the topping. Re-nuke if you wait too long and it hardens up.