It's time for LISK to replace ETH now. Once the hard f**k is complete there will be about 11 million ether on the free market again. That's about 14% of the supply which was locked up suddenly being available on the market again.
There's likely to be a big exit and self-feeding spiral of falling ether prices and panic selling.
LISK should really capitalise on this opportunity as much as possible with a marketing blitz and the team highlighting why LISK may be less likely to suffer the same kind of problems due to the use of side-chains.
I hope many will sell so that i get the opportunity to buy cheap ETH, but i don't think many will, it's already cheap, and many new projects are happening on ETH network so i think it will easily go to 15+ after HF.
I don't think there is any doubt the ether price will crash. It's a simple matter of supply and demand. The DAO sucked up a huge amount of the supply. I'm sure ether will rise again in the future but it is an opportunity for LISK to raise it's profile.