Post Tomino UC has been moving towards more grounded aesthetics since 0080.
By now most UC entries have had that aesthetic.
0080, 08th ms, 0083, Unicorn, HF, Origin, etc.
Even by CCA and F91 the wackiness of character designs was toned down significantly.
It looks better anyways imo.
Only Tomino can get away with balancing genki slapstick anime aesthetics within the UC.
Another thing to remember is that the character designs have always been influenced by trends of the era.
80s fashion and style trends also played a part in the designs of characters like Haman, four, Jerid, etc.>>19720004
The only one in that entire cast that looks like a J-pop star is Lane. the rest aren't anywhere close to looking bishounen enough