It would be nice to be able to move/customize the association lines so the layout and readability can be improved in complex projects.
Great idea, you have my vote.
More than 2 years ago I posted an idea to have the option to select entities to re-order the associations.
see: https://forum.mendix.com/link/space/studio%20pro/ideas/2176
In larger models the associations very soon become unreadable.
Would be nice if idea's 3273 and 2176 can be combined when improving the Domain Model drawing tool.