I believe we should wait before deciding what to do. Hardfork can be problematic which would make our legacy coins worth more. I see no guilt behind legacy coins that is why they can not be easily seen as worthless. By Ethereum there were issues before hardfork which made to sell ETC's not so stupid. Legacy Bitcoins have no such bad reputation and it would be definitely logical to keep it since ETC was also not as bearish as peoples prejudices.