There's a very good reason Pr mobs give crappy exp - PR mobs are supposed to be obstacles, not farming.
If an MMO always has reward perfectly balanced to effort, you get a conundrum where the hardest places become the easiest places - because the hardest places give the greatest effort, they fill up with veteran players farming them all the time.
PR is a supposed to be a difficult place to go to or travel through, and making something a difficult place in an MMO is only possible in exacly the way Ryzom did it - making it a greater effort without a greater reward.
That said, I'm all for PR mobs dropping choice mats. I don't think that would make people farm them, as most would still go for the exp. Taking on a more difficult challenge for a few mats is exactly what the PR should be for :)
If an MMO always has reward perfectly balanced to effort, you get a conundrum where the hardest places become the easiest places - because the hardest places give the greatest effort, they fill up with veteran players farming them all the time.
PR is a supposed to be a difficult place to go to or travel through, and making something a difficult place in an MMO is only possible in exacly the way Ryzom did it - making it a greater effort without a greater reward.
That said, I'm all for PR mobs dropping choice mats. I don't think that would make people farm them, as most would still go for the exp. Taking on a more difficult challenge for a few mats is exactly what the PR should be for :)