Okay, I have 'answers'
How many to extend? Really can't define a rule on this, Queanbeyan is only 12 lanes so we could extend to 12 qualifiers but that will increase the games by a good 40 minutes, we do have Restricted travellers to consider. And potentially lane faults (fingers crossed, but you never know)
If the field is going to be extended we will make an announcement at the commencement of 5pm Saturday. I say this in the most tentative sense I can.
And I don't really see it's likely to change from matchplay. Like I said our number of qualifiers is limited, any other format means most of the field would pay $80 for hardly any games.
So I guess we'll just have to see.