The Queensland Senate election remains really the only musical chairs game.
When the music stops who’ll miss out.
So here’s the deal....
It’s optional preferential and the preference exhaustion rate favours a first past the post finish.
It’s designed that the last quota is 1 vote more than the quota who misses out on the chair when the music stops.  That’s right you can poll 14% AND STILL MISS OUT
Also, as a party achieves a quota, their residual is calculated and transferred to another party
While 4 parties have a quota percentage between 0.6 and 0.75, it’ll go something like this.
Lab 0.6
Greens 0.68
ON 0.71
LNP 0.75
Leap-Frogging can happen but whoever blinks first falls out of the race 
The lower parties will be eliminated first.  One can deduce where these are likely to play out (eg Lib Dems, UAP, VARIOUS other L or R parties.
Distribution of their preferences is likely to elect LNP and one of Lab or Greens but having secured votes to fall over the Quota level, there may be nothing or minimal left to transfer. If that’s the case, it becomes a first past the post race at that point  
Of course there’s enough votes floating around to elect one on each the Left and Right, and the very last position may hinge on a handful of votes. 
Which means 
I’d rather be the front-runner then than Chasing from behind.  You could be on 0.99 of a quota and still not win (as from vague memory happened in Tas in 2016)
Talking of Tas, they certainly will only elect 2 Lib Senators unless there’s more preference miracles as Lambie is on 0.6 a long way in advance of the next rated party.