Yes.
As of now, the shell game and Fireworks are comparable credit-wise, but Fireworks is more intensive (requires more active commitment and all that). Decreasing the shell game's payouts would be pretty destructive economically (there are a zillion items out now, and two ways to get credits to buy them). The alternative is making Fireworks pay out better.
I liked Ryzian's suggestion of changing the way the flawless multiplier works. (Drop multiplier by 1.0x, not to 1.0x, every time something is not hit flawlessly.)