You are right. After looking through many posts on ActionManager code online, it seems changing just the view is not possible, even using ActionManager.
As a workaround, I implemented a script that fits the image on screen, zooms in and moves the image half off-screen so that the edge is at the center. Ugly hack, I know, but the customer is satisfied so whatever
Thanks for pointing me to ActionManager, it was quite an interesting topic to look at.