While WRC2 is still World rally championship the main advantage of doing ERC in my opinion is that You can fight for overall victory. As seen plenty of times in WRC events nobody really cares about support categories. There is barely any coverage for them, no crowds cheering for the victors etc. It's definitely waaaaaaaaaaaaay different to celebrate victory on Ypres square in front of thousands of people and to run over the ramp after the show for Ogier & co. is over...