This Would Make Jungle Better (Xp changes)

Restore the XP nerfs on Jungle camps 100%.

Keep gold fatigue until completed Jungle Item. That's fine.

Make taking Smite reduce XP from lane minions for the first 14 or 20 minutes or so, so you cannot permagank and have good xp at the same time (this would reduce powerful xp leaching during ganks).

Now it's a choice of ganking to get kills or feed kills to your laners with a tradeoff (you won't leach much xp) vs farming for leveling up for a more prepared future gank. It won't be like old days where you were 2 levels up for successful ganks (you got kills, leached xp, and already had good xp from jungle camps), and it won't be like today where you are always 3 levels behind if you farm jungle vs being leveled uplift you perma gank. The new choice would literally be to farm jg to be even, farm and gank for potential leads and assists, and potentially permagank for gold leads at the cost of potentially an xp lead.

It would be better than it is now, Since you wouldn't be cornered into 1 decision, gank-spam, being the only best decision always.