I still don't see why a Champion would want to prioritize farming over ganking. The ambient gold increase just allows ganking junglers to be not hit as hard by camping a lane. Before if you camped a lane you would get 26 gold in 20 seconds, now you get even more in the same time? While farming junglers get a boost, ganking junglers get a boost as well, which I thought Riot was trying to avoid. I just don't see how ganking/support Junglers will be a less viable option. I do like how AD jungler like Kha'zix get a boost, but I still feel like ganking will be the preferred way to go.
Counter jungling should have more of an emphasis I guess. Clearing the enemy jungle will have less of an impact compared to before, since now you get more gold without having to farm. I'm waiting for some more Stonewall008 jungling videos before I make final judgements (on Jungler health and time after lvl1-4 clears), but I'm not currently seeing early and constant pressure having less of an impact. I don't have all the facts, just my recent observations and beliefs.