Have zero (0) as a tempo value

Posting this as a request for Cubase/Nuendo, since it is more of a music-related request.

As per my post title, I find it to be a relatively simple task, to fade out a song using a slower tempo, at the end., so for example, sustained notes do not need to be used.

To achieve the scenario as outlined, I need to extend the final notes of a song and using Continuous Controllers, such as Volume, as automation or expression, I can fade out the audio for recording as a stem. In addition, the process creates silence at the end, for a less abrupt finish.

What I have found is, using a tempo of 1 beat, occurring 1 bar after the last song measure; this allows only horizontal scrolling for as long as the song is, which is very convenient in terms of zooming, at the end of a song.

If tempo were allowed to go to zero, at least for the last beat, I’m assuming the sequencer would stop, so potentially another convenient function for the DAW.

I understand that cycling is affected to some extent, since you are slowing down the tempo at the close, but I have not found this in any way jarring, that is to play along with an acoustic instrument.