The Lucky Knife "may" need some retweaking (though, I think JCE's intent is to keep it useful as long as possible).. I think it would be obsolete once you start getting awesome weaponry in the WOR.
Regarding patches.. there needs to be a master database of patches and where to get them IMO. Maybe I'm a little nieve but it isn't a bad idea to make happen. Also, a recommended patch set should be included (or marked or whatever) so that those that want to hack the game can use it... or perhaps it should be integrated somehow with the FF3 Editor... (it's a thought, not a requirement though).
My recommended patch list (will include stuff already included, * will imply what I think JCE's patch needs):
http://www.rpglegion.com/ff6/hack/patches.htm*Evade (must)
Rage (must if you actually want it)
*Rippler (must if available) - did JCE remove this or keep it?...
*Vanish/Doom (must)
Summon Aim (when applicable)
http://www14.brinkster.com/assassin17/patches.htm*Genji Glove (must)
Pincer/Row (must if wanting a challenge)
*Runic Fix (must)
*Step Mine (must)
*Recapture the Glory (must)
Control Attacks Ignore MP Cost (must)
*Damn Yellow Streak (would be nice)
*Auto Status Expiring (must)
Control MP Response (must)
Invert Damage If Undead (I wonder...)
Sketch Bug (must)
http://www.angelfire.com/al2/imzogelmo/patches.html*Multi-Steal (must)
*Grand Stairway (must)
Gogo Cursed Shield
Pink Gogo (because I actually use Gogo in Cyan's Dream)
*Mine Cart Fix (must)
http://slickproductions.org/ff6patches.php*Can't Lose for Winning (must)
*Elemental Display Fix (must)
Offering Tweak (hmmm)
Summon This! (if applicable)
Anchors Aweigh (must)