This will cover everything I get as feature requests.
Please don't suggest anything that will completely revamp a large part of the hack, as the hack WILL be completely revamped already. For more information, click the 3rd ETA in my signature. It will be updated as I have information.

bold text signifies a completed feature.

Completed features
These features are complete, and can be found in the latest version.

"No Challenges" option in Headquarters
+/- 10 % Randomised Fist/Weapon/Spell damage
Monster Arena (AI Bots)
Minimum postcount to participate in RPG (Admin setting)
Update stats after confirm end of battle


RPG Integration Hack v3.5 / v4
All of these features will appear in the version listed 2nd in my signature.

Skills System 1)
Effects System 2)
Gaining Gil after Monster Battle
Ability to add text along with an image for Clan Signature
Ability for Clan Members to attach the Clan Signature to their Forum Signature
Multiple Clan Ally/Clan Enemy
Per-usergroup permission to participate in RPG
Revamped Itemshop
Cache system for query efficiency
Critical Hits in battles
More intelligent Monsters
Better Class limiting options (Race-unique Classes)
Class-specific Clans
Clan Creation limitations (admin configurable)
Limit of Lottery Ticket purchases per user
Better Clan Permissions editing
Option to verify a member wanting to join Clan
Clan Member ranks with standardised permissions
Option for a cap of level/stats


RPG Integration Hack - Reloaded - AKA RPG-NG
These features represent something I really want in the RPG, and therefore will make their appearance even if it's the last thing I do. In the 3rd ETA though.

Skills System v2 3)
Clan Tournaments
PvP (Person versus Person) tournament
Clan Wars
Randomly find items while browsing forums (will be limited by the use of postcount check)
Randomly encounter monsters while browsing forums (will be user level setting, restricted by postcount and last battle time joint check)
Clan Hall of Fame
Option for users to deny there ever being an RPG hack installed on the forum :p
Synthesis Shop (Item Upgrades)
RPG type change at level up
Item Donate
Multiplayer PvP Battles
Multiplayer Monster Battles


"Too Expansive" or in other ways hard to accomplish
These features may or may not make their appearance, but only in the 3rd ETA of my signature.

Character Creator. Reason: I don't know GD coding.
Farming. Reason: Having trouble grasping the coding and visual aspects of this, plus got tons of higher priority things to do.


Denied feature suggestions
Lets face it, these features either suck or are completely unacceptable because of performance issues.

Rename Purchased Items. Reason: SQL query intensive, plus it would make it hard to distinguish between items.
Active flash visuals on the battle screen. Reason: I know bugger all flash, plus Im sure it would be somewhat intensive, plus it requires plugin installation by end-user.
Secondary weapon to replace fist. Reason: Fight honorably, and don't be a pussy that is afraid of breaking a nail.
Firearms to equal Magic for non MP users. Reason: I choose to call it something else, so there will be no shotguns :p
Persons being challenged cannot deny the challenge. Reason: I dislike forcing things upon users, challenges being the worst.



Explanations

A "Skills" system will replace some of the functions currently handled by the RPG. Spells is an example of this. An administrator will be able to configure various Skills based on different categories. More details will be revealed at a later point.
An "Effects" system is basically a way of enhancing the Skills. Whereas Skills may deal raw damage (such as a Limit Break, or Fire 3), additional "Effects" may also apply. Cast Regen to allow your HP to regenerate slowly. Use a Weapon Skill called for instance "Boost" which enhances your next attack by 15%. The possibilies are endless.
The Skills system will have to be revamped for the RPG-NG, because of the fundamental changes to the core stats being introduced in this version.