Would a new show use mainly greenscreen tech to cut down on set costs?
Assuming CGI has a minimum quality to it to not look like 90s B5 all the time or cheap web series?
You'd wind up with CGI looking exactly like that (the less detailed the CGI, the cheaper it is). The CGI used in Star Wars: The Clone Wars
is relatively expensive, driving each 30-minute episode a little over a million bucks each.