I'm not certain if suggestions are welcome, or if these have been made before, and I'll abruptly apologize if this turns out to be a useless wall of text, but... Would it be possible to impliment a NPC that deals with weapon modification? For instance, you could gather venom from a naga, and give it to said npc (Probably Rath) to modify a weapon into one that can inflict poison damage every turn to viable enemies? Or an npc that can enchant certain weapons, giving them the capability to siphon your opponents HP to sustain your own, or the ability to apply the perks of the spellblade or lust dagger, given the rarity of both? Another suggestion would be special attacks for weapons. For instance, the katana would have a "Quickdraw" special attack which would hit the opponent twice. Using it in succession or with high fatigue would decrease the chance to land it, and if used with the Double Attack perk active, up to four attacks would be present. Additionally, if plausible, Speed could affect how it appears. For instance, a PC under 80 would simply perform a swift draw with two-four strikes, and above 80 would use a charging draw, placing the PC behind them in a Samurai-esque fashion. Getting flashy there, but, you know. Another example would be the shining sword, which, once a day or at the cost of fatigue could utilize the charge weapon spell that deals extra damage to corrupt enemies or release a wave of energy with the same effect. The last suggestion would have to be "Large" Transformations. For instance, say you're a fully-fledged Nine-tailed kitsune, a Minotaur, or a Dogmorph. Would it be plausible to script a temporary transformation into a large ninetailed fox, or, take on a bulkier form not unlike a Minotaur Lord, or even become a Hellhound, all within combat for roughly 3-5 turns? The purpose of this would be to gain heightened magical capabilities, melee capabilities, or lust resistance/manipulation, not particularly in that order or all at once, and assist with plausibly stronger enemies, if implimented.
I know ultimately this all comes down to ALOT to script/code, etc, and there might be a fair chance it's been requested, directly or no, not to mention the permissions and whatnot, but I thought I'd throw in my two cents, at the very least, however I hope my suggestions are not taken as something that would change or be outside what CoC should be. It's an awfully nice game, and I like it.
On another note, I'm uncertain if this has been mentioned, but, when fighting "The Rude King", upon landing your final blow, his turn still progresses as if he was not defeated, which can lead to him defeating you instead. If you survive his attack, you win, however. Is this a plausible bug or is he making a last stand?