why not make the start at the top of eau rouge instead the buttom of eau rouge ?
This would require to modify the whole track (starting grid positions)... The race is today, so basically, I think it's reasonable to say it is too late to make that kind of changes.
BTW, I don't think the Eau Rouge will cause so much problems in the start, it is not an overtaking place and we are doing single lane rolling start, therefore, I think everybody will be quite cautious, so IMHO, it will be okay. Actually I think we will have more troubles in Les Combes.