Have it take place more often.
Limit the amount of tickets each person can purchase(only if the duration of the drawing is reduced.)
Take a percentage of the pot and put it towards a bonus jackpot.
Have multiple lotteries with various ticket amounts, purchase limits, and varying payouts.
Have a credit lottery. Credit buy in credit pay out.
Choose your own numbers lottery.

I have heard people say that because of lack of user intrest the lottery isnt a feature that will get changed until it is used more. I think this is the problem...the lottery is boring and takes entirely too long. If there were more options and shorter waiting periods id be more inclined to play and id bet others would too.

i like the idea of 2 or + draws a week n credit lottery as for the others ill give them more thought

nice thou