Have you never watched a film and wanted them to make a prequel, sequel or anything else in the same imagined universe? Never read a book and wanted more in the series?
As for fixes, if you watched a film and there was some awkward CGI in it would you think "wow I really hope they never improve that"?
There is no such thing in movies like bad cgi at a given time. Noone with a sane mind would ruin 10s of millions of investment with bad cgi nowadays. CGI reflects the state of the art, or a level that is acceptable/affordable and won't cause the viewer to be knocked out of concentration.
Maybe for people who work in the industry and have an eye what to look for, cgi might have issues, but viewers won't recognize anything odd.
Also... movies either work or don't work. I even rewatch movies from the 30s. There are movies, like Fritz Lang's M (1931), which were tens of years ahead of the industry regarding pacing and storytelling and still (re)watchable almost 100 years later.
