Why are you not putting Cas or Salford in that?

I'm confident we will grade higher than at least 2 current SL teams.

Correct, I should have made that clearer.

If Cas finish 11th this year, their league points will drop by 0.15 points.

That's not quite correct.
The way it's worked out you can only drop in multiples of 0.11.
And it depends what other teams around them do as it's an average over 3 years.
But from my calculations they'll actually lose 0.22 points assuming both Leigh and Hull finish higher than them.

They would have 2.89 points for league position if they finish 11th.
They had 3.11 last time.

If we win GF we'd end up with 2.67 points (assuming London don't finish higher than 12th.
But if we do win GF and 1895 we'd have an extra bonus on 0.35 taking us to 3.02.......0.13 higher than Cas.

Fine margins.

They'd go from a 7th, 7th, 11th average, to a 7th, 11th, 11th average.

2021 7 3.3333
2022 7 3.3333
2023 11 2.8889 3.1852 3-year ave
2024 11 2.8889 3.0370 3-year ave
0.1481 drop

I agree. But that isn't the end of the calculation.

Once that is done, the teams are reordered into a league table and given a new score.
So last time 3.1852 put them in 9th so were allocated 3.11, with Hull and Leigh below them.

This year Leigh will be much higher and Hull I think will just scrape above over the average, putting Cas in 11th.
So the actual points for the IMG score drops 0.22

IMG seem to have brought in an environment where clubs are making strides both on and off the pitch, which is clearly a good thing but, the fine margins as to whether a club is in or out of SL next season is getting quite ridiculous and it's not "sport" anymore.

The sooner that we can achieve a grade A the better.

.... and maintain.

0.22 is bigger than 0.15.

Are you are saying that 7/11/11 averages as 9.666, and it's that calculation that is re-ranked and then attributed the performance score?

In that scenario, we would be 10/12/13 = 11.666, so you are looking at whether another club could/would drop in between and change the 3 year rankings?