[DerekAsirvadem]

I don't have a need for such a feature, and I doubt "all" OG users have such a need.

You may be confusing the drawing tool with a database rendering tool.

Why don't you use different shapes (the same basic shape with slightly different characteristics) to symbolise the slight differences. Eg. Visio with the PC Tower symbol, with add-ons for database; web; app server; etc. You can place them all in a Stencil, which will make them easy to retrieve and use. When you want to change an object from one shape to another, it takes just one click in OG (via the Inspector/Styles/Lines&Shapes).