Great piece of software! Not quite at the automatic level yet, but very close. Some small improvements needed for that.
1) I love that the beat is always matched in your software, that is huge. Mixmeister used to get it wrong many times, so I had to always manually drag the beat grids. Even Ableton fucks it up sometimes if I remember correctly.
2) No need to play with bass and treble manually, beat swap is sufficient. Saves a lot of time. Still I would like a feature that let's me create my custom transition, and then I can apply that one to my mixes (repeat my own custom treble and bass transitions).
3) The biggest problem right now with your software is the start and end points it chooses for my tracks. Most of the time it chooses the wrong beat as the first beat of a bar. So I need to manually reposition tracks. That is not super annoying as I do it quite fast, but still, manual intervention is required. To solve this, you need to improve your system that detects when a bar starts (not easy I guess) OR, what I would personally love: Allow me to set start and end points manually, which should be remembered between mixes. Then every time I add tracks to a new mix, it uses my saved start/end points for those tracks. This feature is most important for you to add right now, urgent. I think this is solved if you will allow us to manually set the first beat of the track, and the last beat of the track. Then you can calculate for each bar when the first beat starts for that bar.
These are the important points for me. BTW playing Youtube songs: Less than half actually work. Something to be fixed.