IdM 8.0 Packages and package objects - Good practice guidelines

Hi,

Anyone know of any information or guidance on the best way to maintain/structure packages in IdM 8.0?

Should we be doing everything in customer specific packages or are you just as well to create objects in SAP delivered packages?  If you need to update a form should we be modifying the standard form object or creating a customer copy?

I heard rumours that the old functionality whereby you were told of the changes you had made when upgrading to future versions has been removed?

Thanks in advance,

Pat