Why not fix the code, create DAO2.0, and move on? BTC has hard forked before, it is a learning experience. Why do people say ETH is dead? ETH was not even hacked.
BTC was hacked before and survived!!
Even when you 'fix' the code and create DAO 2.0 it is not enough. People will remember this fail forever. There is something which can't be fixed with rewritten code - people's trust.
And how exactly BTC was 'hacked'? I don't recall anything like that in the past. And certainly no coins were stolen during that 'attack'.