OK before you all hate on me, please know that *I* am my co-op group's dedicated miner. I spend 2 to 3 entire days in each in-game week mining boulders etc, so I am greatly affected by this change. Deep breath, then, and shields up....here we go....
In A17.0, mining boulders and trees was BY FAR the quickest way to level once the player has Iron or Steel tools and is specced for it. I currently get ~200 XP per boulder, and just less than that for a 1200 HP tree. That means that 3 trees or boulders equals killing one zombie.
Believe me when I say that I would be able to harvest MANY more trees and boulders in a day than you could find and kill zombies. Many many more. You need to go find your next zombie which could be anywhere. I just need to walk 10 steps to the next tree or boulder.
In our latest play-through I am 12 levels ahead of the guy who does all the looting and zombie killing.
In short, mining was already extremely OP as an XP-per-hour source from the the mid-game onward.
And it just got buffed....
I think the issue there is it sounds like you're talking about XP Per Hour if you were to go full tilt on XP focus alone. Crafters/Builders/Miners, have a fair amount of down time too.
* Travel to where your mining
* Travel to where you're pulling wood
* Travel to where you're gathering water
* Crafting in various stations
* Building the actual structures
* Doing the actual repairs
If we wanted to talk about staying out and going full tilt from a person gaining XP via a Zombie Kill or XP via constantly mining/chopping wood, Zombie killers wouldn't be out scavenging. What they'd be doing is...
Place 10+ camp fires.
Throw doors into 10+ camp fires.
Kill boat loads of zombies.
Way out pace miners/crafters.
Now if you want to compare game play activity through standard game play, that's not even a calculation you can do. People play in far too many different ways. From Solo, to Multiplayer, to various ways of harvesting, to various ways of focusing on XP, etc. TFP really is stuck with finding a middle ground that isn't going to make everyone happy.
I personally have no idea how you'd be so far ahead of your other guys playing. Are you sure you've looked at how much time each person is actually playing? Are you on playing more than they are? Are you also in a position where you've been hitting a number of wandering hordes? So many factors that could be causing this. Tough to call either way.
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I think its too early to give decent feedback.
Probably the best point so far.