I don't think so
That comment is about all I care to say on the topic. I just don't care that much about linetypes. I think the system sucks but I've been "dealing with it" for long enough that I'm normalized to it. Every now and then we -really- wish would could... like... maybe have parallel lines... but hey, I guess that's too wild and crazy of an idea. I'm sure no one in history has ever used a double line
I guess Autodesk has always thought railroad tracks really have only one rail
MONORAIL, MONORAIL, MONORAIL! Then there's the idea of using a linetype I've seen on some prints, that's drawn with long skinny rectangles. Sort of like having long thick lines, but hollow. Can't do that under normal circumstances. The only way to replicate that is with a polyline with a global width > zero, and setting a VISUAL STYLE to something other than 2d, iirc, or changing FILLMODE, or whatever the sysvar is... but of course that has ramifications elsewhere that may be undesirable.
Just not a fully developed system, imo. I could def. do without a fancier editor... I'm fine with notepad. However, it'd be nice to have some more options...