My solution to Jungle XP
So the biggest challenge that I see in currently trying to balance jungle XP is not in the amount of XP given specifically, but rather that there is little agency for junglers to play a variant style. As it currently is, you have to be making successful ganks, leeching lane XP, farming your jungle and securing objectives just to remain relevant in the game.
Instead, my solution would be to allow junglers to choose what XP boost they get based on what color smite they take.
Red Smite: Kills and Assists on enemy champions give increased XP. (Ganking style) - Smite same as live.
Blue smite: Jungle camps give increased XP (Farming style) - Smite similar to live, but no damage to enemy champions and increased healing on camps.
Green smite: Objectives and Tower assists give increased XP (Objective style) Increased smite on neutral objectives and can be used on towers to deal physical damage.
Yellow Smite: Vision score gives increased XP (Vision style) Yellow smite provides a refreshing blue trinket that can only be placed nearby. (Blue trinket at yellow ward placement range). Also smiting an enemy champion provides true vision of them for 5 seconds.
This would allow the jungler themself to choose where they get their XP from and to cater their game to it and be rewarded accordingly. It would allow clear avenues of weakness for the enemy team to exploit while still providing ways to stay relevant for the jungler, no matter the map state.
I would also make it so that you can swap your smite color from the shop for a small cost (100-200g ish).