After the prequel timeline is complete, what should the new story and charecters be?

Huge question!

I suppose finally bringing the Alien to Earth? At least Mars, to keep the budget down.

So yeah...Some Xeno action on Mars or the moons of Saturn, making some great back drops! Then getting on to Earth.

Very Difficult really...

The Universe was known for Ripley, Alien Xenomorph and Queen, and i think any after movie has to discount these... well just not cover them and offer something fresh.

We have the Yutani and Weyland company and History of Rivalry and what kinds of Technology they both have and what their companies mainly do...   We also have the Merger and have to wonder WHY/HOW and what makes such Rivaly Companies Join, do they make up their differences and realize that working together they could offer a Massive Monopoly?  Or was one company not doing well and a Forced Take over by their Rivals happened... and how would this stand with some of those behind/with the company that has the Short Straw (i think the ADF Prequel Novel may cover some of this).

The company does not have to be just about David and other Synthetics either... but its a case of would such a Spin off work?

The Engineers are Ancient and maybe their seeding and interaction with other Worlds stretches Far across the Galaxy, so this opens up a whole Star Wars/Star Trek Realm of Posibilities

Or a Alternative interactions with Humans in other parts of the Galaxy, think Caprica/BS Galactica meets Star Gate SG1, but then then again would this be something others would be interested in.

Then we also have the knowledge of LV-223 and that Black Goo, and the Engineers Experiments and what lead to this, did the Black Goo come from some Xeno-Related Ancestor?  Did the Engineers Create similar Organisms in the Past.

And so we have to ask is the only Engineer Black Goo/Xeno-like DNA/Organisms only found on LV-426/223 and Planet 4/Paradise and maybe Origae-6 after David arrives?

Or are their remnants of the Engineers Evil Biology or Experiments somewhere else in the Galaxy, that Explorers could uncover.

So yes there are possibilities for sure, and RS seems to be interested in the AI aspect now, and  the whole Alien Resurrection Plot does give us a back ground to how on Earth there had been Synthetic Uprisings, and so something like this could be explored too.

I am going to be a bit busy now... but will reply as i was working on 2-3 Projects within the Universe and i covered them again the other week.

One was a Parallel story where a Human mining colony was set up on a World that contained a Buried Cave with Xeno-related Organisms that was different and a Buried Engineer Ship with few dead Engineers and a Alive one.

The other was a Parallel story to Alien R where a Failed Ripley 7 Queen and some of Ripley 8's DNA was taken to a other Facility near Saturn where this place worked on Genetic Engineer and attempting to create Super Soldiers.  They use the Failed Ripley 7 Queen DNA to create a Hybrid Queen and we get off spring, and they then use Ripley 8 DNA to create a Enhanced Human to battle with them at the end.  After the Companies Super Soldiers via Genetic Manipulation proved to not be a threat to the Alien infestation.

i still think that they are going to try to creat an expaned universe not completely unsimilar to marvel. that seems to be what every studio wants right now. i think they are going to do spinoffs then anthology movies then try to connect it with the blade runner timeline.

as for on earth, i think that could work as one ofthe anthology movies. perhaps some space scavengers get to earth and it is a completely abandoned post apocalyptic setting and somehow weyland is still there and then xenomorphs escape and attack everyone.

BigDave, Holy crap! Can't wait to read those projects!

I'm glad this was brought up. I just finished up an outline for a sequel story called Olethros which takes place 40 years after Aliens and it basically follows a family that has woken up to an earth that has been completely eradicated/transformed by a widespread Engineer attack.