Huge player based? Those kinds of sites are surely established ones already. Site owners won't bother to look either for any proposals here as I see there's no need for any further partnership or business proposals by others because of their build status.

What about taking a chance by emailing them one by one. Browse at the Gambling section and see what site fits your criteria. Since there's a lack of info here, especially you just recently created this account, you are the one who needs to make some adjustments rather than them will contact you instead.