Notepad: after reading Mick Wall's recent Sabbath book 'Symptom of the Universe', your comments are not surprising.
Since day one Sabbath got no credit for anything from the critics, and have always been treated as 'second class' by the industry.
Iommi is an incredible guitarist, and those who know metal and know guitar, he is an icon, legend and unique.
He does things that most guitarist can only dream of, get sounds and has a heaviness that no one can match.
As you eluded to, during the Martin era was responsible for some incredible songwriting, bar one album with Geezer did it all on his own
with writing some of his best riffs and songs.
As for the 4 remaining Martin era albums that are long deleted, I'm sure it's in Iommi hands when these are released.
I know that Joe Seigler from black-sabbth.com is in Iommi's management ear about what should be on any re-issues.
I reckon they would be held back until the whole Sabbath 13 album, touring cycle, 13 album re-issue (with the 4 remaining 13 session unreleased tracks)
is done, as to avoid any confusion with the current line up.