Bestiary Farming

It may be beneficial to POE to have the expensive beasts show up only/more in higher tier maps.

Right now the expensive beasts show up in low tier maps and cheaper beasts get added to the pool (dilute the pool) in higher maps. The player gets disincentivized for doing harder content.

It would be cool to have influence/Bestiary strats or Maven/Bestiary strats.

Thanks!