I wanted to try and compare the current lottery to the proposed changes for one of the 4-10 sweet spots
I'll try out 5th seed
in the current lottery, the 5th seed has 10.5% chance at the 1st pick and a 42.1% chance of being top 4
in the 'new' lottery, the 5th seed has that 8.1% chance of 1st (3/37)
let's say the 7th seed wins the 1st pick, and then it's 3 ping pong balls are removed from the hopper, leaving 34 balls and there's another drawing for the 2nd pick. The 5th seed now has a 3/34 chance at the 2nd pick; an 8.8% chance. Let's say one of the teams with 2 chances instead of 3 wins 2nd pick and then, it's 2 balls are removed (ouch!)
so now, the 5th seed has a 3/32 chance at the 3rd pick; a 9.4% chance
so then say that another of the 4-10 wins the 3rd pick, which would then leave the 5th seed with a 3/29 chance at the 4th pick; a 10.3% chance
so, for a top-4 pick the 5th seed would have 8.1%+8.8%+9.4%+10.3% chance at a top-4 pick = 36.6%
so, under the current system 5th seed has a 42.1% chance of a top-4 pick compared to the new system at 36.6%. Not really a dramatic change However, the 10th seed will have the same 36.6% chance as the 5th seed. And under the current system it has a 13.9% chance
obviously these odds can shift a bit depending on which teams wins the first 3 drawings. But I sure can't see how this system will de-incentivize tanking. All it will do is shift the tanking target from 1-3 to 4-10. Unless there is more to the plan