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Mod Idea: Dynamic EXP/Money Multiplier Adjustment for Infinity Engine Games
I've not seen this mod yet, but it may exist. The idea is simple: Through some in-game scripting (possibly via some innate ability usable at-will on the main character), you can change the EXP and money multipliers for all EXP and monetary awards, including quest/combat EXP, money found, and sell/buy prices. (Assume quest and combat EXP are separate multipliers, as are monetary multipliers for coins found/coins obtained on selling/buy prices/quest rewards.)
Since this likely involves dialog for each option, this is what I suggest for multipliers:
(increments of 5% or 10% up to 500%)
This way, people won't need to reinstall mods to tweak EXP values.
I chose increments of 5% or 10% so people can finely adjust things. Values above 100% exist for testing and extreme purposes, as well as to simulate Heart of Winter-level EXP boosts on normal difficulty.