Every company have their way of going Abuja their marketing and can chose whichever method they deem fit to achieve their target. Running a signature campaign here will depend on how big they are and if they have the finances to fund that but it will definitely worth it as it will show that they are serious. It's all about what they consider important to them and that is where they will channel their marketing resources to.
A signature campaign is certainly a smart marketing idea but it is also a choice to make, plus password recovery is different from other campaigns here, you need to have problems with your wallet to require their services and that doesn't happen everyday and they haven't exactly said anything against starting a signature campaign anytime in the future
I believe starting one would definitely increase their reach though.
Running a signature campaign is not a bad idea but before they talk or think of running a signature campaign, they should be able to do their check and balance to check how far it could profit them as an organisation because password recovery job is something that does not just come up every time compared to casinos or mixers which is being patronised so often. Doing a signature campaign would be a huge fund for publicity and the question is, will they be able to recover their investment in the publicity so quickly from the campaign looking at the fact that they take 20% charges on the amount they have recovered from the wallet when we all know that such work doesn't come that easily.