Hey, neat. Thanks for checking it out!
I took a look at MS Word 2007 on the PC I'm sitting in front of when I wrote my previous comment and didn't find any difference in the space, but I didn't use anything more fancy than a ruler. I'm happy to accept your findings. Perhaps there's a difference between Word on a PC and Word on a Mac?
So I accept the concept you're presenting, but it doesn't seem like an actual solution to the problem. If there is always more space after a period, there will be spaces after sentences, sure, but there will be spaces within sentences as well, which defeats the whole point. Does that make sense?
In order to have additional space only after sentences, you must have a decision made by something that can parse actual grammar. Machines cannot do this consistently. People can. ...Err, people are more likely to be able to. ;)