Not sure if there are mods that can increase spawn, attack and raid frequenzy.

Honestly, constantly under assault from trolls would get old reaaaaally quick, just IMHO.

And how do you gonna build a base with trolls constantly breathing down your necks?

Edit: To be at least a bit productive here: Pct2NspXkR
It's the seed of my main, which has large black forest regions, might have to travel for that a bit, but there are smaller slices of BF not far away from the spawn point.