Still does not answer the question why the sun doesnt get any smaller.The sun is always going to be the same size. Just like your car/truck is still going to be the same size, even after you've walked a mile down the road, though it does look smaller from your POV when you turn back to look at it.
And you have no answer as to why the temperature doesn't match the tilt, right? It is a problem, isn't it.