An example of this is the Killer Vegan's bonus to killing vegetables. The skills are great in the beginning but add up to nothing in the end and with Killer Vegan's bonus being so late into the game as useful ( since veggies aren't really in the top 4 floors ) it just never shines esp. since it's not even proc'd 100% of the time. I do think the exp. should increase based on the level you're on not the level or skill or might of the creature or the skill's level namely because it allows the skill's abilities to always stay valuable since it's not really a "Headstart" type passive anyway. For the Hunter it also allows a strong combat based alternative to Archeology and gives some element of gain without being so toxic or "Must Have". I would also suggest that Wizard's get a bonus for killing Constructs and other Magickey Critters seeing as they are the only class Archetype without this at all. Whilst it's true that Wizards do have a bit of an advantage in the beginning in the right combonations in later levels where constructs and whatnot are popular this would give them more even footing so that they do not meet the axe so quickly since they are inherently squishtastic and ( like most games ) when an archetype plays out the difference becomes more and more apparent. So TL;DR: Change the bonuses from killing specific enemies to scale to the dungeon's floor. Add a Wizard's version that focuses on Constructs or the Undead or Demons or whatever.
