Am not expecting them to conduct another round or more of signature campaigns in this forum since they don't seem particularly interested in it anymore and are more focused on other stuff like review campaigns etc.
We never know until they say so. A review campaign is also a good campaign and highly recommended too, but signature campaigns are like banner campaigns that show what your platform can offer in many sections of this forum. If they have the means and can keep up, I'm sure they will do that. We cannot argue the success of the top casinos that continuously do forum marketing; they know it works, but it has requirements for it to work.
It's definitely possible for sites to become popular even without long-running signature campaigns through other forms of marketing for a long period of time.
I agree there are other forms and platforms to do marketing, but there is a level of success for those who do marketing here in Bitcointalk.