With debugging i would like to have the possibillity to click on the associations and then see all members and their values of the connected object and not only the ID as it is now.
I do think this should be an option, but not the default behaviour because doing so would change the way your application behaves (associated date being cached because of the DB retrieve or slower execution). So having the ability to retrieve the data when requested in the debugger would be nice but with a big disclaimer to warn folks about the consequences.