Add support for gradient interpolation spaces other than sRGB, such as LCH (Lightness, Chroma, Hue). When creating a gradient between non-analogous colors, the LCH color space preserves saturation throughout the gradient, whereas Illustrator's gradients have a muddy center.
Gradients have always been poor in Illustrator. If you look closely you will often see banding and weird inconsistencies. For higher quality gradients I've always been advising people to use Photoshop. In many cases this means a lot of extra work and sometimes it's pretty much impossiple to rebuild like when using gradients mesh.
Adobe should be aware of this for... decades!
Oh yes! We definitely need to boost gradients, and this is not the only thing we can improve them with. We also need easings, anti-banding solutions, annotator on strokes, exact copy-paste capabilities, etc...
But for this one there is one external script solution, Gradient Blender by Sergey Osokin: https://www.youtube.com/watch?v=Q3FG0g5yDm8
It does not explicitly convert the gradient into a new color space, but it calculates the new stops required, in three different interpolation modes: OKLab (same as is used in newer Photoshops), HCL, HSL.
So far it works for me and I'd like to know if it suits you, for now, until Ai team make this one a default thing.