Guyver is OLD.
It hasn't bent to the tropes of this era that make things popular. And that is another reason why I still like it. It never caved to what was popular like some series do.
The whole basic premise of Guyver has been done over and over again, and constantly been refined into other popular tropes... but Guyver is originally from 1985, and is still heavily influenced by this... Especially since anyone trying to get into the manga or anime have to contend with it's age. And some of the early stuff hasn't aged well.
The first 6 episodes of the 1989 OAV are still the best thing to show new potential fans... but its age is showing too... There are no HD re-releases to make it look better... And the Manga Entertainment version is a lesser version when compared to the original release by AD Vision.
The 2005 TV series just wasn't enough like the 89 OAV, despite the TERRIBLE marketing campaign claiming it was "The New Face of Ultra Violence"... When it was a TV series and could not, and would never have anything I would remotely consider "Ultra Violence". If it was an OAV and did have "Ultra Violence", the 2005 series would have been received a lot better... As Gory violence is a hook that brings people to watching it. But in the end, the 20005 series was... Boring? As a fan I loved the extra story bits and whatnot... But it wasn't anything special or exciting for new people.
And THEN you throw in all the delays and gaps in releases of the manga (5 years at the end of April) and it is no wonder few people ever care about it.
The only reason I feel that we are getting the statues and figures, is that Max Watanabe of Max Factory is a personal friend of Takaya, and Guyver helped build his company with the early model kits. Hell, the Bio Fighter series of figures predates Figma figures. And I guress whomever runs Prime 1 studios must also be a fan. Or they were paid a lot to make the statues.