Forum should not change rules due to bounty stake. As you mention problem is signature. Why should increase or decrease merit system? As well as its working fine. Why not just remove signature space from Jr. Members. It has been suggested by lots of user include me. But eventually implemented 1 merit for Jr. Members. It's true that few spamming already reduced. But not fully and it's not possible. Because there is lot of existing user who got merit by Airdrop. A legendary rank by airdrop it doesn't mean he is a great poster.

However spam will never end but we can reduce it more. I don't think need to touch on current merit system for that. Just remove Jr. Member from signature campaign will reduce almost 70% spam (IMO).