Not looking for anything heavy duty. Those five attributes (save default paragraph style) are all available as options now–the object style would just allow you to set everything in one go. I’d add frame margins and/or padding to that list. All() the coders at Dorico would have to do is add the ability to set the default paragraph style for text frames, and put the whole thing into a single object style you could apply to any relevant frame.
These are all things we do regularly with every project… why not make it easier?
You can, though, open another window, set them both to Engrave, then open the template on one and watch the actual page change in the other window as you press Apply.
You said “Who designs and thinks it’s a good idea?” My point was just that major established companies have used this exact paradigm for a long time, so it’s not like Dorico is deficient in this area.
“Dorico is the only music notation software designed from the ground up for composing, and it supports you at every stage in the process. Flexible input and editing tools allow you to change your mind about any decision at any time, and work without constraint.”