They have busy and quiet days just as any other sites. But a well-designed promotional/marketing campaign could definitely help drive more people in.

No idea if SwC have any marketing funds lying around to spare, but maybe re-structuring the jackpot requirements to something more achievable could help, together with shifting some funds from the jackpot pool to the marketing fund. Then maybe use it to run a series of guaranteed prize tournaments and start giving away entry tickets i.e. as a reward for social media engagement or simple promo tasks, small contest etc.

Just my 2 cents.