IAgain, granted that both Borg and Trill underwent a change from their first appearance to their subsequent 'normal'. The Cardassians lost those weird little beards and helmets, too. That's very different from completely remaking a well-established species or entity.
Likewise, I include Archer's encounters on the 'problem' side of the divide, not the 15 years of continuity I cited; I was just as vociferous when those episodes were coming out. :-)
As regards Klingons and Andorians, sure; there was incremental change in seasons or for new individuals (Chang looked different from the norm, for instance). That doesn't mean a complete reinvention of the species, however. That Worf's makeup style underwent revision between seasons of TNG, for instance, doesn't mean it ever left the Klingons 'family' or general look; it is apples and oranges, to, say, redesigning the TOS Enterprise exteriors, interiors, and technology.
There are developments between seasons- makeups shift, sets are embellished and redesigned. In Darwinian terms, this is micro-evolution; the altering of traits within a species. :-) I talking macro-evolurion, the complete change from one species to another. :-). In short, I would suggest it's disingenuous to compare the redesign of the observation lounge from.seasons 1 to 2, or the shift in Klingon makeup, or even new species who changed from their first appearance (but remained consistent after that) with the alteration of long-established, repeatedly-reinfiorced and 'settled' visual or factual continuity.