Audition style audio slopes in Premiere Pro

How can we get Audition style slopes for changing the slopes at start/end of clips in Premiere Pro?

In Audition it's so easy... while in PPro you have to add keyframes first, change the style from linear to curved and then drag it to your liking. In Audition you just hoover over the slope and drag it to your liking. You can even super-impose clips over each other and determine how the fade between clips will sound.

I want that in PPro too...