You are missing the point... I am arguing that Stellar Cartography should be as common place on a ship of exploration as are the holodecks and tractor beam.
My other point is that they BUILT the hydroponics bay ad hoc.. The writers however didnt see the need to make it as glamorous as the arboretum for some odd reason, which I feel is contrary to the fact that for all intents and purposes, this is their HOME.. and needs to be made more habitable for the long term.
You cant tell me with a straight face that a holo reproduction of a french whores bar adds more value than an arboretum
Comparing the Galaxy class to the Intrepid class in terms of things like the Arboretum or even Stellar Cartography is just silly; they had completely different mission profiles. At that point, why not ask why a runabout doesn't have either one of those?