just spit-balling here with the jackpot thing..

one thing you could do is have a predetermined amount such as 5% to be awarded to all players actively playing/being dealt into raked games 3-handed or more according to time stamp.

People will not be able to "game" this system and the reward will be nominal for regular players but awesome for new players.

For example, let's say jackpot is 1M:

35% to loser
20% to winner
15% to remaining at table
5% to remaining at site
25% to reseed and house commission

If there are 50 players not at the JP table they would each get 1k winnings.