Add a preference setting to “Open Audio Part Editor Automatically” after creating Hitpoint slices.
A preference setting gear icon could be placed next to the Hitpoints / Slice tab.
This would prevent users from having to relocate the Audio Part in the Project Window and double click on the Audio Part again to re-open the Audio Part Editor.
When a user wants to slice something, they typically want to re-arrange it immediately. I think this optional setting would be a nice workflow / quality of life improvement.