I read the prior suggestion regarding it and it clearly went off track, so I'm making this.
I played Eden Eternal since 50 cap and was into PvP from 60 onward. The percentage system gave all guilds an incentive to attend territory wars and try to win. It gave space for there to be a variety of large, medium and small sized guilds across the game and in PvP rather than the recurring amalgamation that is two to three large guilds dominating, breaking apart from fights, and reforming in a new way. While that happening is inevitable, I think we can all agree that this endless cycle we are used to across all forms of this game has not been successful in keeping a large player-base afloat. Ever. Anything that can provide opportunities of community and participation for every type of player is what we need to keep a server healthy. What has been done with the main Vendetta server is great, and its amazing that there is a source for players to get the end game content we were all promised on the official server. However, a classic server really will require a different approach to ensure it stays active.
The percentages accumulate when a guild caps all of the crystals, so its always highly likely that if you're a big guild you will still win. But it makes territory wars an actual gamble and gives both sides a reason to try because no matter what there is a way for victory. It negates the immediate defeat of being versus the server and that's great, even if this system is only kept for the first couple of caps. Lets keep people motivated to engage in PvP content.
Another thing I personally liked was the original kill board. I thought the full accumulation of kills was interesting to see and I'm sure other active PvPers would feel the same way. I think it accurately measures people's capabilities better than what it was replaced with, since it shows total kills rather than per player. You can see it at the end of this video. The preference for this is definitely subjective, though.
Regardless of your opinion thank you for reading this far and I hope to hear what others have to say.