Tempo and beat matching

In hopes an option could be selected to have the tempo slider return to original +0% during the span of the ?? sec transition with AutoMIx. I am currently having to alternate a higher tempo with a lower tempo to try stay as close to +0 without manually moving the slider. This is more for when the DJ has other duties and may have to move focus away from the turntable.
I demo’d another DJ program that did this, but can’t remember the name, plus I remember not liking the interface. Would be a nice addition. People in a club know when a song sounds different or faster/slower than normal. They may not care, but they do not enjoy the song the same.