A small suggestion for live chess challenges

Here's a suggestion that isn't all that important, but it would make a minor improvement to live Chess.

When starting a new game, you are given a variety of options, including the minimum and maximum rating you would like to play against.

Could you have an option of, instead of specifying an absolute rating, specifying your own rating, plus or minus some spread?

I would like to play against people who are plus or minus 200 points of my own rating, whatever that happens to be at the time.  If this feature were implemented, I wouldn't have to change the preset values, ever.

I've always wondered why there wasn't a system like this, would be fairly simple to program as well

It could be nice to have an option like that! And have something like auto-match, when the computer find someone with the same option of time and rate as yours!