Lefthanded_Rock_Thrower. If you read the data you would see how and why the fugures were arrived at and what universally accepted system was used to extropolate the data. When seen in context of total hours flown the rarity of the event makes the probability of actual collisions so minute that they are statistically a non event. The report also answers your other questions.
Statistically lightning strikes people on a regular basis but what is the probability it will strike you? Should lightning protection be mandated for anyone who walks around outdoors. Should a subsidy be offered to make sure nobody sees it as a dumb idea and refuses to pay for the equipment.
Near misses or near hits are not part of the study. If you want to make some study of this look at birdstrikes. You will have to fudge your own figures.
I think what you are advocating is absolute safety. You simply won't achieve this under any circumstances unless you stay in bed. Most certainly ADSB won't guarantee immunity from idiots or human factors.
What makes you think that ATC will be watching and advising VFR traffic of conflicts at Burketown? What makes you think that all VFR traffic will have ADSB IN? Only TSO'd ADSB OUT was mentioned in any talk of subsidy. If the Regionals have ADSB IN why would traffic avoidance be of concern to BN Centre?