Jungle S6: Less gold, more XP?

The passive on "smite items" like was changed to focus on experience rather than gold.

It seems the gold on kill for large monsters was increased to compensate but not quite enough to even the change (around 20g vs 30).

Also, the price of most jungle items + enchant was increased around 2625 from 2250 without real buffs.

Can we get some context on those changes?

Here are the new passives:

Grants +10% life steal versus monsters and +150% mana regeneration while in the Jungle. Grants UNIQUE PASSIVE - TOOTH AND NAIL: Basic attacks deal 20 bonus true damage versus monsters. Damaging a monster restores 30 health over 5 seconds. Killing a large monster grants +30 bonus experience.