Am I the only person who disliked FF7 enough to quit playing it? Sure, maybe it's just me, but something that retardedly contrived was just... ugh. I couldn't possibly force myself to continue playing it.
For FF6, I doubt any company would run the risk of angering a huge fanbase by remaking one of their best games of all time. Simply put, they haven't made anything in the FF series recently that would compliment the original style of 6, so they're much safer just leaving the game as the fantastic work of art is was than try to top that effort and possibly screw up so badly that they alienate tens of thousands of people.
Sequels don't necessarily mean anyone likes a game. I'm sure there is a fanbase for FF4, but it's not like that is
the pivotal point in making a sequel. FF10 blows, for instance.
As for SMRPG, it was neat, but doesn't have nearly so much replay value as tonnes of other RPGs I've played, nor does it rank very highly in my list of favourites. I prefer my RPGs to be a lot more serious overall (cut the cutesy characters, for starters), even if the humour was pretty rad.