I actually liked barbarian fishing :O.
Anyhow, few terrible ideas from me:
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Hide things. You attempt to hide items or construction on the ground. It takes several stats into calculation and with high enough rating you can hide even mansion! You have to get higher rating with PER + Explo to actually see hidden things. Basically you can hide something even from your own eyes!
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"TIS A TRAP!". You place trap in forest, which will catch up to 3 wild animals. Higher your Hunting skills - more chance you will get RABBITS in there. Lower hunting skills - you may endup with 3 quite angry bears!
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Fishing improvements. Fishing without pants improves your chance to catch fish with crafted lure
