Making Krugs a super-sized camp was not a good idea
When Preseason 7 first launched, Krugs were buffed as part of an experiment to test out extra-large camps that would be riskier to take early on, but would give more gold and experience in exchange. After they had even more XP added to their rewards, Krugs have been used by junglers to jump to level 3 and gank lanes immediately after, which feels terrible for any laner. Riot's solution to this on the PBE is to nerf the experience reward on the first clear for that camp, specifically, which completely defeats its original purpose.
Because of this, I think it might just be better to normalize Krugs, as well as the other camps, back to the same spawn times, difficulty and rewards. The problem with these camps is that, even though they're supposed to be high-risk/high-reward in theory, in practice they just tend to reward junglers with the early game strength to take them on with even more early game power, which brings us back to a meta where early game junglers like Lee Sin dominate to the point of oppression. The only major difference these camps make is on the first clear, so special-casing Krugs specifically to give lesser rewards then runs counter to their core intention.
On top of that, there have been some other problems tied to the current distribution of XP and gold: Raptors feel way too damaging for the rewards they give, even against AoE junglers, and Ivern's passive doesn't work properly on Krugs (it doesn't fully clear the camp), which is apparently also intentional, as he'd otherwise get too many rewards.
The TL;DR to all this is that upping the variance on gold, experience and spawn times in the jungle has mostly just overbuffed some champions and screwed over many others, complicating balance and early game health, and not offering that many positives in return. The new mechanics on jungle camps are great, but the monsters should all be normalized to the same spawns, power level and rewards if we are to avoid abuse cases like the current Krugs in the future.