Well, the easiest solution is to just open another sceneview. You can dock them in the same tab view so you can just switch between the two or even more than two by clicking on the corresponding tab.
However if you want more control over your saved points you can use this little editor script i just made. With CTRL+ALT+P you can enable / disable the controls in the sceneview. The control window can be expanded / collapsed and moved around in the sceneview. You can add as many presets you like. The presets as well as all the settings are stored as json in the editorprefs as a single string.
edit
I just added some more features to this editor script. Each preset now has a context menu to edit the preset and general settings. I’ve added a way to re-order the presets and to export the settings to a file in case you want to move it to another machine. You can also additively import only the presets from an exported save. Furthermore i’ve added a visualization of the camera positions and their pivots when holding down CTRL. This can be disabled. Also there’s now a toggle in the Tools menu on the top.
If you find any problems with this script, feel free to leave a comment.
ps: Since it’s an editor script it need to be placed in a folder called “editor”.