Triaging is a mostly thankless job, and I feel like a little bit of a reputation boost for "correctly" triaging (where correctly triaging is triaging in accordance with the final decision) would be nice. This should probably eventually apply to the other queues as well, but for triage it is clear what reputation should be given for.
First, the entire point of the review queue is that there is no good measure of good and bad. Hence, we need humans, multiple of them, to review a case. That would make rewarding 'good' reviews almost impossible. Note that the end result of a review is not always the end result it should be, thanks to robo-reviewers.
Awarding reputation for reviewing is a bad idea. Not only for the above reason, also because it encourages robo-reviewing, something we definitely not want to have.