re: They should move beyond TOS
They already did move beyond TOS in STNG, DSN, V and ENT.
STNG was the only worthy effort IMO. The others were either to dark or boring or both.
Television of the sixties was all low budget and TOS was actual one of the costliest shows on (part of what killed it the first time). On your criticism of the costumes I think you are only showing your youth.
I would have been happier with ENT if it had gone back to the same sort of costuming and color scheme as TOS with an upbeat feeling of boldly going forth. Going back to the earlier days at Star Fleet Academy could offer this.