Transparency/opacity for gradient mapping

This has become an annoyance of mine recently and it seems this has popped up in other threads as well i.e.

https://community.adobe.com/t5/photoshop-ecosystem-discussions/gradient-map-adjustment-layer-quot-opacity-quot-doesn-t-work/td-p/13219995

https://community.adobe.com/t5/photoshop-ecosystem-discussions/gradient-map-foreground-to-transparent-preset/m-p/13196185#M671350

It would be nice if you could specify:

1. A color that is somewhat or completely transparent by using an alpha channel or opacity (i.e. 255 or 100% would be completely opaque)

2. The strength at which the gradient is applied over whatever it's applied onto (call it opacity if the wording "alpha channel" is used above or "strength" if the wording "opacity" is used.

There are many, many useful applications for this, such as a transparent fire effect i.e.

https://www.youtube.com/watch?v=u1qs0xh0e5M

The above YouTube uses channels to make a selection and then apply a mask onto the image. This could be much more streamlined if gradient mapping with an adjustment layer with alpha channels/transparency would be possible. Another application of this is if one would want to not override say the highlights but want everything else to gradually become a certain color.