Another thing that was brought up by my linkshell, a point that was actually pretty interesting, was the concept of making the rewards for each team different. At least, the base rewards would favor a handful of jobs here and there, or be niche pieces for certain jobs, etc; combined with an attractive pool of boosts from being in first, that would encourage diversity, rather than clustering on one team only. It would be difficult to balance out, but it would definitely make it more interesting if different players had different stakes in various areas for unique items.

Again though, it would eventually become a bit top-heavy in some areas; example, we have a lot of people who favor melee as their main jobs, and likely want to get something to benefit them. A melee-oriented bonus would probably get the most support. I dunno, the concept is there, but the balancing would be difficult.