So for day 1 this year, B had 30 to 32 1/2 points, plus some people with fewer due to being restricted. The issue in this thread is that some people with 33 or more points would have preferred to play in B. If some of those players had, say, 40 points, they'd have a big edge on the rest of the B field. My idea is to cut that advantage in half. You can do that either by making day 1 points worth half as much or making day 2 points worth double. That way someone with an "earned" edge of 8 points, if they chose to drop down to B, would only have a 4-point edge. I chose doubling day 2 rather than halving day 1 just because I think it would be easier for people to follow that way.
So the "B+" player with 40 now has a different choice to make: keep that 40 and stay in A with a decent start for the A finals, or drop back to B and yes, have an edge, but less of one. There is thus still incentive do to well right up through the last game of round 5 since either way you get to keep some of your edge, but you're now incentivized to not drop down because you only keep half of it if you do. Limiting that benefit to half also means that the "regular" B folks have a much better chance of overtaking you if the play well on day 2.
Hope this is clearer now.