The icefall spawning later changes nothing, half the room is blocked off either way. Just make a warlock portal over the icefall like you always did. The only difference is I guess if you manage to get hit by the 0.2 seconds the icefall is actually doing damage while taking the warlock portal. It's a nice change because you don't have to rely on eagle eye/far sight now.
The image change is a huge nerf because it spawns the image very close to Jaina now, so you just move the boss on top of the image and have it die to passive cleave then enjoy your p3 with no images.
Also, you can kill the elemental then dance around for a bit and let all your stacks from the first blizzard of p3 fall off and start p3 with 0 stacks. Looks like this it's absurd
https://www.youtube.com/watch?v=UcBISVPXlIQ
These nerfs are enormous. Our guild isn't good and we went from a 22% wipe last sunday to getting our first kill right away last night.