From Scratch

From multiple sources I've come to the conclusion (and pretty much confirmed) that most everything in D&D was just conjured from thin air. In other words, there is no rhyme or reason to Monster stats, or spell abilities, etc. Because of this, the best advice almost anyone has for converting or creating material is "eyeball it". This is a problem, not because of balance obsession, but internal consistency. I want my players to be able to use logic to play the game. I don't want them rushing in to fight a Giant Ram, because they've slayed a Dragon, and the Giant Ram should be easier to fight. (Just an example.)

Because of this I'm thinking it might be best to simply develop my own guidelines, possibly referencing D&D or trying to keep some level of similarity. I'm thinking (and redbaron at the ODD74 boards has a similar system) of simply making a Hit Dice by size chart (as in Human =1, Giant = 10, etc.), and possibly Hit Dice by human level chart (Peasant = 1/2, Knight = 5, etc.). Then have an armor class by type chart as an example (Leather/Natural Hide = AC12, Chainmail/Scale = AC14, etc.), and then maybe a few modifiers (Small = +1, Flying = +2, etc.). The same for damage (Natural attacks = 1d6, Fireball = HD x d6, etc.). Then you could obviously use the various XP determination charts from either 1E or 2E.

Spells would be a little harder, but you could still devise a similar system. Level 1 spells = 1dx+1/level, Level 5 = (level)dx, etc. Non combat spells might be a little harder, but I'm sure there is a metric you could devise and such.

This would obviously be a large undertaking, but I think it would be easier in the long run, to have nice guidelines for creating and converting monsters in a solid way.