A friend and I were thinking about doing a Colosseum battle to the death with our group, for game sessions when not everyone was there, or just to let people test out character builds.
What we were considering was a system where everyone carried an extra 5th level character with them, and we'd let said characters duke it out for fun. Getting past all the rules we decided on for the specifics, we kept coming across a single problem.
How do we create a scenario that is equally beneficial/hindering to two characters, regardless of base-class?
Obviously, predisposition to combat will aid any character. However, given that all classes can be min/maxed for combat, we want to create an environment that won't favor one type of combatant.
Fighter vs. Rogue: without cover, fighter has clear advantage. With cover, fighter is suffering unfair negative.
Wizard vs. Fighter: at close range, fighter has clear advantage (can close distance quickly and disallow spellcasting). At long range, wizard has clear advantage (time to cast spells and prepare for fighter approach while harassing fighter and maintaining range)
We want to make the environment as minor a factor as possible in this, with dice-rolls, strategy, and character-effectiveness being the deciding factors.
Any suggestions on how to accomplish this? Can it even be done?