I think the signature campaigns could help but not really when your demand is too big compared to your earnings in signature campaign.. As a person, we have our own satisfaction, so we have to make sure that the amount we are earning is just enough to cater our needs.
Signature campaigns are good but we can't say that it is going to be best way and steady income with bitcoin. And I think trading is going to be the most steady way to get good income with bitcoin. But although there are seasons that we are going to lose and it is going to depend on how much you are going to invest with it.