I'd be against this, despite using Plasma on one of my systems and having an overall positive view of the project. Although admittedly I do slightly prefer Gnome because consistency is something I'm really anal about.

Gnome just feels a lot more stable and consistent. It works well, has a good release cadence (although KDE is making steps to improve theirs), and most people who use Fedora are happy with it.

Critically, Gnome has good accessibility features, and they're improving rapidly at the moment. I think good accessibility features are imperative for a workstation distro.

I've also never really heard any Fedora Plasma Spin users complain about the quality of Fedora's work, or it being called a "Spin" instead of workstation. It's already treated with pretty much the same level of care as Gnome is, so what would this achieve, other than months of bickering and a bit of confusion?