Yes, thank you for your suggestion. This is an interesting idea. However, we already have something very similar to this which you can see at http://www.chess.com/computer-workout/
idea

Luckily for Wayne, premium members get the whole thing.
I wouldn't mind seeing this put in effect. There is only so much that playing a computer will do for you. Who knows what sort of psychological effect your opponent may have? Too confident? Too worried? Factors like these can only be achieved by playing a real opponent.
Of course, people will need to look at the position in-depth before they accept. Someone could be screwing with their heads. ;)
But that's another reason why we could have default themes.
For example the K+P vs K. In order for black to win, he must successfully create a draw.
Of course, these games shouldn't effect your overall rating.
just had a idea where on advance options for startings chess.com could a option for starting near the end of the game for praticing endings ie both players start with two rooks and knight etc and then choose a postion,i think it would be a good option would do you guys think?