I´m an editorial designer, and for me creating, managing and rearranging guides is basic, I found that even Illustrator lacks this and the only software I use which has this right is InDesign. I hope that Publisher and hopefully Designer as well might benefit from devs having this reconsidered.
I have seen the tutorials for Publisher and I found it crazy when the instructor just dragged guides out from the rulers by the eye. Professionals don't work like that, we set up guide systems in a rational and exact way. You can see this in the "master pages" video tutorial for Publisher. I know you can do this via the guides manager but it is one guide a the time right? or maybe I am missing something.
I -as many who are interested and suggesting stuff- hope Serif and the Affinity line can work things up to the level where there is no Creative Software Monopoly.