As a matter of fact I may agree that the bottle doesn't need changing at all even though the no. 1 is really nice. Sometimes it is really better not to put out the fire if it doesn't burn you.
My suggestion is you could give an option in installer which models are to be replaced and which not, with selectable groups like NPC, PC, Chocobos, World map, minigames, items,.. for example.
Something like in installer of
Collective Thief: DS Texture Pack By John P. to get a better picture what I'm talking about.
This way you could prevent any disappointments among people with different tastes.