Round table

1000 hobbits for a Necromancer – can you imagine what a boost that would be? And I wouldn't want to have to catch 2 Archdevils instead of 10 Nagas.

In the first week, this is a stop signal for the Necromancer. But you only confirmed my main point – there is more variety now.
Hobbits are just 1/140 of all the monsters, and they are quite dangerous too... but Peasants would really have to be banned.