I have been thinking about a hybrid format that is mostly cash game but incorporates a little tourney structure. Marsh's comment about play getting a little loosey goosey was the trigger to suggest it to the TuNP crowd.
Everything about the play is pure cash game. Blinds stay at 1/2 all night. Rebuy's and add-ons are allowed. But when it comes time to cash out at the end of the night, things change. 50%, or whatever portion we want, is held out from the cashouts. If you have four racks, instead of being paid $100 you get $50 instead. The money that is held out pays the three largest stacks, not highest ROI in case of rebuys, biggest stacks period. Biggest stack of the night would get half value of the stack plus 25% of all buy-ins that night, second stack 15%, third 10%. That would give extra incentive to try to amass a large stack and tighten up our games. Furthermore, by keeping 50% value of the chips in front of you it prevents an all-in fest at the end of the night which would happen if it was *only* payouts for the top three places since anyone out of the money has nothing to lost by shoving. It also gives incentive for the chip leader to continue playing instead of nursing his stack and trying to coast to the finish line since there is still cash value to amassing even more chips even though they are in first place already.
Any comments on the format? This would probably be a weekend experiment game.