I think you mean the Frostwood here, or at least I never ran into Kura (second-best fox) and Hatsu in the Old Forest.The only place i'd want to have that done anyway is the old forest, after everything is said and done there is only like 2 combat encounters, and Kuro and Hatsu will make sure you know there still out there between said fights lol.
Right now, the only "frequency of combat encounters" I find annoying, having recently farmed Frostwood for repeated Gytha encounters (don't ask) and made my first, clearing foray into Undermountain is OH GOD NOT THE IMPS AGAIN! Shankers healing themselves whenever they protect (and heavens forbid you don't take out the Lord in the first two rounds, tops) makes the fight take inordinately long and it really feels like half of the encounters is "imps". It's why I couldn't be arsed to farm for the super-duper bat yet.frequency of combat encounters