Although I agree Fuji can't be all things to all people, it's really hurting itself for those that do nature photography. I'm holding off on all other purchases of Fuji gear as a result. And it's very clear that if they didn't put so many resources into the GFX system, it would have been here long ago.
They've always released lenses at this pace, some call it fast, some call it slow. They've also been releasing the lighter WR lenses... 23, 35 and 50 f/2.0. The missing lenses in their line-up are niche lenses so they might not be the focus but all rumours AND fuji's own lens roadmap show it'll release this year.