Hi Michael,
it would be nice if it could somehow be compatible with Rhino's system, but if not it is not too bad.
I think the ideas you are talking about sound very interesting.
Basically, I am finding myself working in some files where I have, say 4 elevations and 3 sections, and each of these has about 20 or 30 styles.
I can of course put all lines from one object into a style, but it would be better if I can keep the colors, for readability.
However, with 100+ styles visible in the manager, it is hard to find anything there.

I agree with the idea of having one general type of mechanism for the different browsers, it makes the program more logical, instead of having separate mechanisms for each.