You are already a high ranked member in this forum, you can easily get a high paid signature campaign from the service section! But if you want to do only altcoin signature campaign then you may join in Hydax, Sheng or Blockburn campaign. Though the reward is not good enough but you may have a look at them!
No bounty project is decent until they pay you after bounty ends and you are able to sell for good price, you have to gamble and do research and hope for better outcome
Sometimes good and decent bounty project comes, like this blockburn bounty what's signature you are wearing! I am pretty sure they will pay you, I know the team from the very beginning of their project! In my view, Blockburn, Hydax are decent bounty campaign and they will pay us surely, the same thing will happen in Sheng bounty too because they have some great partners!