Player rating for tournaments across all installments of Heroes.

well, we could keep the 100-point system... the numbers in the third column won't change because of that...

Thus, in total, the winner will receive exactly 50+50=100 rating

I don't quite like that the figures in this non-linear part (depending on place) were just pulled out of thin air...

That is true. But here there are 2 ways:
1. Take an already existing system (like VDV Forever or some sporting one, for example, motorcycle racing, multiply by 2 and end with a one, 50-40-32-26-22-20-18-16-14-12-10-8-6-4-2-1-1-1... by the way, Alan had already mentioned it before, etc.).
2. Write a formula based on place, and perhaps even the number of participants, like in an oscillator, only to make it more logical.
I don't know which of these ways is more suitable.