Taking it at face value is a great idea as we won't get disappointed when it doesn't show up soon.
Well I get that reasoning however that's not how I usually think, I decide whether something means something or not based on what makes the most sense, not because I want to avoid disappointment or something. In this case, for example, Reuben's tweet to me seems more reasonable to think it's because of what you said, he's like us and wants to make another DMC, as he also said in interviews, rather than being some hint at DMC5 being made.