Regarding additional sub-tabs specific to object types.
The active sub-tab of the property panel is not remembered between selections.
The most annoying thing is when you have to change the properties of several objects one after the other.
Of course, you can select multiple objects, click on the sub-tab you need, and change the desired property. Unfortunately, in reality, it doesn’t always work that way.
The most annoying thing is when I have to change the print colors of hatches, annotations, dimensions, etc., before I can print a plan. Or when I use Rhino in “Illustrator” mode.
With each selection, or set of selections, you have to reactivate the Object sub-tab to change the print color property.
You could:
Either improve this by preserving the last active sub-tab used by the user between each selection.
Or, what would be really great, is to have a slightly smarter property tab.
The Object sub-tab could be extremely simplified.
The properties Line type, Line Scale, Print Wide (except the No print option), Render Mesh Settings/*, Rendering/*, and Isocure Density/* have no reason to be for annotations, texts, hatches, dimensions, and Lights (which are the types of objects that have their own specific tab in addition).
Only Type, Name, Layer, Display Color, Print Color, print (Yes/No), and hyperlink would remain.
This would allow merging the properties of the Object sub-tab with the properties specific to the type of objects.
Thus, there would be no need to know whether to keep the last active sub-tab or not.
jmv