My bad, I meant VDR. How are you getting your patient to VDR so you can figure out VDO? Also, I think there are a lot of factors that go into esthetics. However, I believe function comes far before esthetics and to me, 10mm FWS is too much and would cause them to be over closed and likely cause TMJ issues as well as the typical lip/cheek droop esthetic issues associated with overclosing. I establish the correct maxillary line of occlusion with a fox plane allowing 1-2mm of wax to show as the lip is at rest, then adjust lower rim to VDO (after deducting 3mm from VDR.) Then carve in a high smile line along with the other landmarks so I know if it will be a gummy smile based on tooth mould (and if it needs to change.) In my book, upper esthetics are far more important than lower so I would get the upper to your satisfaction and then build the lower to correct FWS. As long as there are no extenuating circumstances, the lowers should look just fine if you have the uppers looking good.