Hi Fabien, yes that's correct that only layer names will be preserved in AI export, not object names. As far as I know there isn't any mechanism in the AI8 file format for representing object names, so I don't think that there is any way to make that happen. If you export out from Illustrator in AI8 format you will probably see the object names not round tripping back in there also.

The artboard size will be settable in the next v4 beta though, there will be a new option for controlling page size for AI and PDF export, on the options dialog:



- Michael