Those who love the colour, ease and freedom of the worlds of Edgar Rice
Burroughs, especially Barsoom, even though they may wish at times that the tales
were more consistent and that the plots did not so often depend
upon the kidnaping of princesses
Those who enjoy the worlds of Leigh Brackett, even
though they may wish at times that she had not given Celtic names to
Martian cities and people
Those who enjoy any series of novellas
interlinked by a common background of invented worlds or civilizations, which
build up into a sprawling science-fiction or fantasy epic, such as -
the many worlds of Clark Ashton Smith
the Hub series of James H Schmitz
the Instrumentality series of Cordwainer Smith
Those who regret that these
great authors are not still alive to continue their series, and who
yearn for a series that does not come to an untimely end, leaving them
aching for more
Those who love planetary adventure especially
when set in our Solar System - and especially in the Solar System as it was before it was
to some extent "de-mystified" by space-probes
Above all, those who want a world to explore which
is huge, varied, mysterious, rich in history, different enough to be
interesting but not so strange as to lose all human relevance, and
with endless potential for adventure.