Seems like the same problem Elite suffered from, it's hard to create a scale befitting of "the universe" while also having gameplay hooks outside of incredibly generic activities. For all the fuck ups at least Star Citizen is attempting to create a limited realm of play with content being curated vs randomly generated. The marketing material, unsurprisingly, uses the "scale" as a primary selling point but it really just seems like a clever ploy to mask the issues which would be more apparent if the number of solar systems were more limited e.g. encountering other players, content being generic, worlds being a poor mash of "mathematically" (read: randomly) generated content combining various stock objects with other various stock objects. Once you had say 500 (not sure if this would be a low ball figure) different animal and environment objects combining things randomly would generate sufficiently different terrain and animals that things never quite look the same.