Might as well increase the favored enemy bonuses by +2 just so it remains even. Also, the one thing I kinda dislike about favored enemy bonuses is that they're campaign-dependent: you might run into a lot of undead one day and zilch the next, for example. This means we should give the ranger the opportunity to switch who it applies to sometimes. Two suggestions in that venue: allow the ranger to spend one hour researching a new enemy (likely one he's fought before), OR allow him to switch it on the fly with a successful Survival check based on HD?
I like both of those suggestions. I think Survival could be more useful on short notice, and every ranger maxes it out anyway.
But we are gonna rip off the exact same effects from Dark Knowledge and adapt them into the Ranger?
Some of the effects need to be pumped (Tactics and Foreknowledge starting at +2 and increasing by +1 for every 10 points more than the DC, for example).
Anyway, I like where this is going...
I guess it's possible to make archivist like abilities, but I'd rather keep using the ranger's favored enemy bonus.
I'm not sure what Kuroimaken was suggesting with Survival. Is the DC to switch types? Does the DC trigger higher bonuses?
Maybe you roll Survival to determine how high the bonus is. The ranger can gain the bonus on
any creature type, but he gets a bonus to the Survival roll when attacking a creature of a type he's chosen. Thus, he can hunt anything fairly well, but he's just better skilled at hunting certain things. So, at 1st level and every 5th level, he gets to pick a new type.
Just some example numbers: Perhaps he adds a +2 bonus to all relavent rolls if he makes a Survival check DC 25. Every five points thereafter, he adds another +2. He gets a +10 bonus to the Survival check against a favored enemy. The numbers work out fairly well in a basic sense (figure roughly +6 Survival at 1st level, +10 for favored enemy bonus, averages a 26-27 Survival check), but I think they might fall apart at higher levels. It's very easy to boost a skill check into the stratosphere. Still, is an idea similar to this worth persuing?