@XNocturnalGamer I've split from the team several times already, and what's even funnier, I would land somewhere else than where they had pinged, and then they would just follow me there instead. Like, so much for knowing where you wanted to land... I guess.
Also, what you're saying about the power level does make sense, however from my experiences, I'm only the Jumpmaster if the first two didn't pick a legend on their own, or I had picked a legend on my own last. Earlier today, the first player manually picked Newcastle. The second player waited out the timer, and was assigned Mad Maggie. I also waited out the timer, and was assigned Lifeline.
Who became the Jumpmaster? Newcastle did.
If it is power based, I haven't seen anything that would suggest it as such yet. So, if you happen to get it on video, that would be quite interesting to see.