Hi,
>> If this "system" is outdated, maybe it's time to change it!?
Yes and no 
I see all lineweights that are needed exist in that list, there are just more than needed and so I just don't use them,
Modifying that part would need not just a development update for AutoCAD, but also thousands or millions of applications/plugins ... and that's the negative side of changing something very basic.
>> We were not sure if all the lineweights are good for practical use...
As mentioned, the ones I don't need I will not use.
>> And that is how it's brought up, why lineweights are so "strange"
Yep, I also don't have an idea for the basic reason of some of these lineweights ... and I also would like to have a change if there is a standard lineweight missing.
But the standards are all there, so for me I accepted to have more than needed.
- alfred -
------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ...
blog.ish-solutions.at ...
LinkedIn ...
CDay 2025------------------------------------------------------------------------------------
(not an Autodesk consultant)