Saji,
Yes, likely with more members sharing means a little less for the eligible payees of the RSB. That's Ok. It is always nice to share and I would not mind if I get a little less of the RSB if even at least two more members benefit if the admin cannot include more than that. We're all eager to earn from this platform and it is surely the goal of most of us, alongside the benefits we get of learning new things and improving our writing skills. So if a couple of more members who are contributing towards the site also earn a bit from the monthly RSB, it would be really good.
When you make a commitment, you create hope. When you keep a commitment you create trust! ~ John C. Maxwell