IMO most of them are alright (for example, the metal materials completely destroy your speed in exchange for the extra power), but the feather ones have incredibly high speed and strength, with no downside other than the lack of natural healing (which isn't really that detrimental, since with Phoenix Feather/GEF limbs you'll almost never get hit anyways).

I once loaded up an old save that was on GC4, decided to change all my limbs to ommel hair and just sprint downward and see how long I'd last. I ended up killing Elpuri and getting the freedom ending, with a very low score of around 80k. My armor was crappy, and I was wielding two +5 hand axes made of weak materials (iron or steel, I think). No victory should be that easy in IVAN.

What sort of things would be considered unbalanced/exploits that should be fixed?

//Wishable Ommel Cerumen/Library exploit/Banana exploit have been fixed

* Ommel hair/Phoenix feather/GEF limbs. (Capristo makes a good argument in favor of these; considering that balancing artificial
 limbs would likely be a large undertaking, they can probably remain as they are) 

* Free vodka in Attnam`s cellar. There are usually around 40 bottles, and you can sell them for an easy 
 500-600 gold early on. Taking the vodka ought to count as thievery and turn Attnam hostile, or at least have some guards down
 there who you have to kill (unbeknownst to the rest of Attnam) if you want the booze.

* Whips are indestructible. Along with their high attack speed and whips of thievery/chameleon whips,
 they`re easily one of the top tier weapon types. There are already broken whip graphics in item.pcx, 
 so they should be easy to implement.

* Sherarax (and Izzy) should not be tameable. Even though 50 TamingDifficulty seems high, it`s easy to
 achieve via PolyControl, and these two are far too powerful; they can both take 
 out Attnam single-handedly. Ur-Khan and Danny should also have higher taming thresholds.

EDIT{Thread On Balancing}

As far as bug testing, I was thinking we could just attach the most recent build (updated as necessary of course) to a thread for play-testing and bug reporting, so that anyone can check it out and report whatever they find. Any objections/better ideas?

Nope; freshly severed.

I just did a test in wizard mode: I got leprosy, had the priestess cure it, then popped my arm off and ate it. Lo and behold, I was once again a leper. It seems that the limbs maintain the leprosy state even when the character is cured. Eating a corpse of a former-leper has the same results.

Well, the odd thing about the arm was that I had already cured my leprosy before the arm was severed (by Sherry), and after growing a new arm via healing liquid I ate the old one, which gave me leprosy, even though the arm shouldn't have had leprosy anymore.

And I'm sure that Nefas' and the mistress' love for bananas is meant to be a dirty joke.

When presented with the "who do you want to talk to?" prompt, you can press '.' to talk to yourself, which abuses your Wisdom.

If you somehow manage to dip something into itself you're given the message "Very funny..." (as far as I know this isn't actually possible in-game).

Casting slow/haste on perishable items will affect the rate at which they spoil.

Limbs may hold leprosy even after you cure yourself; eating my severed arm gave me leprosy once.

Also, I'm pretty sure it's mentioned somewhere in this thread, but Nefas' mistresses sometimes spawn with bananas, which doesn't seem too exciting until you get a holy banana from a mistress.

In the interest of extinguishing fires (among other uses), an ability to 'e'mpty bottles/cans onto nearby squares would come in handy. I'll look into this one when I get a chance (probably early next week; I'll be away for the weekend).

Sounds about right:

Step 1: Raise funds

Step 2: Buy underpants

Step 3: ?

Step 4: New IVAN version!

There were the three major exploits (banana/library kicking, and ommel cerumen wishing), which are all fixed now.

Here's a list of all the bugfixes since the CVS:

- Valpurus and Mortifer always said "never prayed" in prayer screen

- Silva earthquakes caused crash in GC6

- pea soup in world map fixed

- Valdemar spawn rate and base unarmed skill

- Gas immunity bones message bug (thanks Pent, Eagle V): Fixed(?) and needs testing

- Fixed the shop door creation bug (dungeon script files)

- "Fixed" Elite guard taming: TamingDifficulty = 30;

- Double checked that Ommel Cerumen cannot be wished for (this is therefore fixed)

- Fixed the library exploit

- Fixed the banana room exploit

- Holy hand grenade arm and drop in cathedral now go to dwarf room.

- Mustard gas hostility bug fixed. Still facilitates masochism, and fixes the NPC staying in the gas
 cloud by virtue of the hostility change. Instances of GasExplosion() in miscitem.cpp, level.cpp, gear.cpp,
 level.h were also harmed.

- wand of slow no longer casts haste (thanks for the reminder Warheck!)
 

The mood system could certainly use some fleshing out: what causes each state, what are the effects of each state, etc.?

Insect clouds have a few possibilities: a simple "insects" material could be added, and anyone inside the cloud takes damage, with the only major obstacles being getting it to move, and figuring out how it will spawn. Creating an actual monster type with the properties of a gas could would be more complicated, but may not have much of an advantage over just making an insect material. A way to clear a square of gases would be good as well. I'll try out the insect material idea and see how well it works.