Unfortunately incentivising usage of forums in this time and age is extremely difficult and probably not even worth the sheer effort it'd take to even take a decent shot at it, especially with our (currently?) tiny team size. I don't think a bot would be enough to achieve frequent use of forums either - we don't have the bandwidth to introduce one at present regardless. Whether we'll try to incentivise forums in the future I can't say, but right now there are no concrete plans for this.