I would love to have an "Effect" Tool-tab in CaptureOne with Analog/Vintage effects such as Highlights Glow, Motion Blur, Prism Effect and the ability to add Overlays as a separate layer to an image.
With the Grain Effect you already provide one of the main Analog effects available out there.
With these effects integrated I would have CaptureOne as the All-In-One tool making it obsolete to use other 3rd party apps for the Vintage/Film look...