Eye of the Herald should go to the killer
The ability to contest and steal buffs is an important aspect of jungle gameplay that allows for dynamic shifts in the flow of the game, depending on the skill of the jungler.
Currently, Eye of the Herald has to be picked up. That made sense when Rift gave a passive buff, so you could better delegate who got the buff, but now that it's an active, why not revert it to the killer?
Rift is an incredibly powerful tool right now, but there's very little room for the jungler to contest it, unlike other buff objectives dragon, baron, red, or blue. This change would emphasize vision control for teams taking Rift, but allow for decent junglers to secure Rift and turn the tides.