I understand that CheckPoint wants me to use the new features, but I too would welcome a way to comfortably switch my session between read-write and read-only, so here is my 2¢:
It often happens that I need to make a quick change to policy and it would be really helpful if I could just glance the "status" of all admins and see if they "promise to make no changes" or if there is risk of them racing their publish against mine, because when that happens and they manage to publish before me, then I am pretty much forced to install their changes (and be the one responsible for breaking things). Unfortunately I often work with less experienced colleagues that sometimes publish changes that are, in fact, not complete, so I really, really do not like installing their changes, because then it will be ME responsible for THEIR breakage...
I tried to talk to my colleagues into closing SC when not needed, but starting SC is too slow to be done on demand. Switching between read-only and read-write now also requires a SC restart, making it even less practical.
Before HomeOffice I just asked everybody in the room to avoid publishing because I have a priority change to install, but now that does not work, renewing my need for this feature.
I second the idea that it is a good practice to browse logs in read-only mode and to switch to read-write only when needed.