Remember preference for project selector

Hi,

When I log in as admin in my database, I have many projects and subprojects, so I really like the new "project selector" configuration
As an extra, I think it would be good if the choice we make for this selector is saved for each profile.

I think two possibilities :
1) define a user parameter which loads the user's choice by default at startup
2) save in database the last selected option (I guess principle could be the same as what is done for saving collapsed/expanded views, etc.)

Thanks !