What should Varanid husbandry practices be like?

[monitorlizard]

After reading various threads about nesting options for monitors in captivity as well as diet in captivity, I began to wonder what should general husbandry practices be like.

-Should we mimic the wild to the closest degree? Using the largest enclosure possible and providing a very deep substrate for burrowing, nesting, etc. Feeding a multitude of prey items that would be found normally in the monitor's natural habitat or at least species similar. Keeping the animals in (for lack of a better term) colonies or pairs similar to the groups of animals normally found in the wild. Providing many temperature gradients and fluctuations withing the enclosure mimicking the rise and set of the sun as will as replicating the annual climate changes the occur within the animal's natural habitat?

-Should we do everything for then animal, providing an almost hospital like environment. Doing this by keeping the animal on a sterile substrate, providing prepared food items loaded with vitamin and mineral supplements, providing only two temperatures within the cage(one with a higher temperature for digestion, and a lower temperature to provide stable conditions that will not influence the monitor internally). Only giving the animal a nest box when the female is gravid.

-Should we do some kind of combination of the two? Perhaps providing food items that are not necessarily found in their natural habitat, but rather are nutritionally the best. Together with that providing a habitat that is similar to their habitat in the wild.