[Nerull]

Actually, for most classes it has less to do with the abilities themselves but how the player uses them. For example, the sorcerer is not inherently cheesy; it's just that they can exploit the spell system to their advantage (a wizard can do the same, but just doesn't have the number of castings that a sorcerer does). Either one can use unlimited spell exploits; it's really up to the player if they wish to exploit this or not. I played through with a sorcerer, and refused to take Mislead, Project Image, or Simulacrum; he was powerful, but not really cheesy. Use Any Item is the same way; if you use it to use wands, rings, scrolls, etc. then it is not really cheesy. However, if you use it to strap full plate on your kensai/thief (who chooses not use armor because of their philosophical system, as opposed to not knowing how to). I almost wish the ability was restricted to use with any item EXCEPT weapons and armor, just to avoid such gouda. Ranger/cleric is another fine example; if you restrict yourself to only cleric spells (other than a few very low level ranger spells that you would be able to cast from your ranger levels), then it is not cheesy at all. However, if you throw Iron Skins and cast Draw Upon Holy Might on your character, then you are crossing that line into areas of cheesiness. If the player chooses not to cross that line, they can; however, I do agree that having the option just sitting there to do so adds an incentive that shouldn't be there.

Oh, and the exceptions to the above are the Weimer classes (overbalanced shapeshifter and anti-paladin). They are beyond gouda.