I think I've said this before, but I think the solution here is to keep 1 point/win, drop all the 5 point bonuses, and have a 10 point bonus for winning the WS.
The problem now is not that the rich get richer, it's that what you end up rewarding is being like the Maddox-era Atlanta teams, constantly winning the LDS, then going under .500 the rest of the way. Removing all those 5 point bonuses stops that. It's especially bad because it's relatively easy to mimic those teams. Stack up on Milacki/Hill/etc types, run all of them out in the LDS, then go .400 the rest of the way with what's left, and you end up with way more points than most other strategies. But that's not a good way to play playoff baseball. And do we want teams like those Atlanta teams to score better than, say, the early 2010s Giants?
You do want some bonuses. You want people to still have a chance to make big jumps. If it's still 21 points for winning a WS (11 wins + 10 bonus), then every playoff team gives you lots of chances to make a big leap. So you still have drama. But you have it where you should have it - in the WS, not in all the LDSs.
This is not a change that would help me, by the way. Mostly I've done well by feasting in the LDS, and then occasionally getting a bit lucky in later rounds. But I think it would make a better tournament.