Zoom Comparisons

OpenOffice Zoom
Here it's a bit more complicated, with the zoom items in the lower right corner of the window.

Inkscape Zoom
Here we see a nice juxtaposition of the X and Y of the mouse  cursor position, with the Z of the zoom, in the lower right corner  of the window.

Comments
I think the Inkscape method has a lot going for it. I do like the slider in OpenOffice, though I realize the range of possible zoom in  Scribus (and worse in Inkscape) may make a slider impractical, unless it  has some logarithmic behavior.