I posted the question because the case was, well, not hot, but getting there. Perhaps I let my fears ("Warning, Will Robinson!") get hold of me. "Fears" is really too strong a word. I make it a habit to pay attention to the pi. Because it is not running cool, I thought it deserved a question on this forum. I'm really glad you mentioned your Seti@home experience. That shows me that I'm right to be watching, but panic is not appropriate.
Really, though, there's no harm in asking if a case with a fan is in the works. As I said above, I really like the Flirc case and have no regrets about getting it.