The first change is better than what existed - a little - though it appears it was not properly tested, which is not surprising at all. And it is not the optimal change, which would have been to just keep that lead team properly buffed, the way it would have been had the yolo teams (generally the 3rd and 4th and below) not tried to jump in. That's always been the stupidest part, that when more teams come in to the battle, they pull from everyone pretty much equally - that's asinine. Yolo teams should hardly be affecting the effort credit leader at all. If they get in the roll, it should be *mostly* at the expense of the lowest teams. The team in the pole position should remain there. If you're ahead 70-30, and a 3rd team sneaks in, you should not be dropped to 60-20-20. It should be something like 68-16-16.
In other words, the effort credit leader should always have odds reflecting of their total effort credit lead. If multiple teams are in range, they should be splitting up the rest of the pie. That's how you get a reasonable feeling simulation without closing the window on teams and discouraging battles.
TL;DR, nice try, I guess.