If you think theres a market, get some boards knocked up in China and sell 'em. Call it the "Aklemduino". Or make one on a piece of stripboard with a switch on pin 12.
You're still going to be stuck with prototyping on a breadboard, because there isn't that much you can do with a single switch and a LED. Ooh look, the light flashes faster when I press the button........
The lack of a switch and an extra jumper wire on the bread board isn't going to save much time or effort
I'm in the 'decent compromise' camp 