Proud to hack Ruby Version!
You could also include Poison Trap (that inflicts a status problem), I guess.
But it's not a very original idea.
Oh and I hope you plan to replace Potions and Ethers with natural items, such as fruits, berries and plants.
*blushes* Thank you...though of course, I owe plenty to PMD for the ideas XD
Status problem Traps are an issue because there doesn't seem to be any way to do them simply through scripting - they'd require ASM, which is beyond my capabilities '
And I did just that - all those man-made items have been suitably renamed. Hyper Potions in the above post, for example, are known as Prikear Berries (after the prickly-pear fruit) in-game. XD Most items are renamed after a Berry, but some that just don't fit that mold find inspiration in other natural sources - the Macho Brace becomes "Heavy Log" (though I can't imagine much EV Training going on in this game XD ); EXP Share is a "Forget-me-Not," and the Shell Bell becomes a Bluebell, for example.