To be the devil's advocate:

I for one enjoy the random loot pool generated for each player as it supposedly gives everyone an equal opportunity at receiving a reward. It's nice receiving a piece of gear you really want and not being pressured or obliged to give it to another person. If the option to add things to the loot pool becomes available then this is lost. If an item drops to me and I really want it, but the linkshell decides that another player is more worthy, they will most likely force me to add the item into the lot pool for that player to lot on. I think it's kind of neat that voidwatch prevents this, no matter how greedy it may seem. Players are rewarded for their time instead of their prestige or ranking within the linkshell circle.

Remember I am playing the devil's advocate. I think this is the kind of logic SE was working with when they created the voidwatch system.

However, problems still arise with repeated drops to the same character and things dropping to people who don't need them. Can anyone think of a way to prevent this? Perhaps a point system really is the answer.

I don't know if it's possible, but perhaps the treasure caskets could take a tally of what job each player has leveled and randomly supply loot based on that, even if it's just synth materials. This would only apply for armor/equip. For example, if I was a mage only character with only mage jobs leveled then I would not receive equip with DD jobs on it. Would this prevent unwanted drops? I'm not sure. I think everyone perhaps has a job retired or in the background nowadays that would bugger up this system. So, let's continue to brainstorm.

Maybe you could set your desired 'types' of items at a voidwatch NPC. For example, the armor NPC for Salvage asks you to commit to upgrading a certain type of armor: usu, ares, marduk, or morrigan. I know this doesn't necessarily alter much of anything (or it hasn't been proven), but the option does exist. If SE could tie the options chosen at such an NPC to what appears in chests, wouldn't that be both nifty and convenient? If I choose the 'mextli set' line then I would be eligible only for items which fall under that category from my personal chest while others could choose the 'fazheluo set' if they so wish.
This would add a timesink (which SE would be a fan of) as players would have to progress through each 'set' if they wanted gear from each.

Just some ideas. For those posting and wanting SE to simply add the loot to the pool, would you object to this sort of system.

Also, inb4 ps2 limitations.