a) I agree with timethief: having to scroll down even for just the latest post isn't user friendly, especially for returning visitors. If you like stickies so much, I suggested you at least add the Recent Posts widget at the top of your sidebar.
b) It is highly unlikely that WP will endorse your suggestion. The sticky option was more prominent on the edit screen a couple of years ago, and they buried it where it is now because lots of inexperienced users misunderstood what "stick to front page" means: they thought it was a necessary step to make your posts show up, and marked each and every single post they published as a sticky - completely messing up their blogs.