I know there are downloads for Oasis Landing as a home world, but those don't have all the features of the real future areas. For instance, the taxis are normal rather than hover-cars, the townies wear normal clothes, and the plumbot waiters are just normal sims. Is there anyway to make all the futuristic features I just listed as the default for the Oasis Landing home world versions? Thank you!

I don't think you could do that, seeing that most of the downloaded worlds comes with randomly generated sims and townies. I would just start a household, move them into the future, and place in the missing rabbit holes. The future can play like a regular town, even having school systems for children and teens if you place in the rabbit hole.

In Oasis Landing, you can't do things related to procreation: you can't "try for baby", you can't use the science skill to clone a future resident.

There is an NRAAS mod that fixes that... I think Master Controller does it, but it may be woohooer.

Actually I could get one of my Sims and Bella Bachelor to have a baby in the Future/Oasis Landing and I don't have any mods at all.