What you are suggesting will only benefit account farmers more than the forum. nobody wants to pay you more money, all of the campaigns based on stakes are not paying you any thing from their own money, they are paying you with other people's money.

Expecting merits for doing a long post with graphic is not meritorious. if you really want to contribute, spam bounty managers with your OP, see what happens. paying less to members with no merits will create a market to buy merits to get more in a campaign.