Fassbender is UNSURE of PROMETHEUS SEQUEL?

I think they are going for canon, in that the aim is Prometheus line of events links directly to Alien etc... i.e Peter Weyland is founder of Weyland, and Charles Bishop etc. With regards to the SJ well he was about 15ft, yes Ridley tried create a illusion of a 26ft being with child actors that gave us a 22ft + one from one scene to then the close up we could see was smaller and looked like 16ft +... Actual Prop was 15ft ish Now Prometheus was supposed give us 12-15ft Engineers and thus would fit with Space Jockey this was then revised to be 9ft tall, which in actual fact anyone could work out the illusion was only 7.5-8.5ft Tops.... This can be fixed as the Elder scene was cut and will never appear in any cut of the movie, this not intended to be seen as part of the movie. This means they could be redesigned, but also who is to say that the Sacrificial Engineer was not 12ft tall? And our 8ft Engineers on LV 223 could be just another breed of smaller Engineers. By having Paradise show the Elders and creators created a number of different classes of Engineer that differ in size could fix the Space Jockey size problem.... They could get away with once fraction being 8-10ft and another cast of Engineers being 10-12ft tall, we would not notice the Space Jockeys extra 3ft then or the Engineers in Prometheus 1ft loss of height.

The visual look of the film is not something they want to mess with, but if technical difficulties really prevent a larger space jockey, I think everyone would forgive them for building a giant puppet or the like.