"What does worry me is the ½ ing may not drop hashrate.
I see 300 to 500 ph going offline,but I think the spike could be that 300 to 500 ph. I really do hope to see a 20%-30% "
I have the strangest feeling hashrate wont drop either...imo it will just keep going, and going, and going. probably will stabilize at some point (end of the summer). idk so many factors here, the halving, probably no new hardware for a little while, and imminent huge btc bubble in autumn

by the way that diff is getting close to my pick....GO DIFF GO
My bet is it will tripple very quickly.
Phil, you remember the spike at 2200 PH/s (+1000 PH/s in one day) on May 23rd? Well, that was probably only one manufacturer (Bitmain?) testing their new gear. Now when they (Bitmain, Bitfury, BW, even maybe KNC despite the bankrupt, who knows?) are going to go online after the halving, minus all the small ones unplugging their gear... I'm pretty sure hashrate will go up significantly.
But hey, that's only speculation...

NB: That's actually good news for Bitcoin security.