When I first joined the team back in 2005, after being blown away by the MSTS version that Jimi built all by himself, I was very much in the frame of mind to complete all of the District Line.
It was mainly the development of RW Decal that paved the way for us to restart the route in Railworks which was a new simulator at the time. So if that tool can be resurrected we will be able to easily get a lot further east. As xavier said it depends on a number of factors apart from that.
The Youtube clips look amazing such attention to detail. Very much looking forward to this. I still run the Blackpool trams LT&S on MSTS although the graphics leave a lot to be desired these days. I used to go to school in Upminister and have fond memories of those trains having travelled to London on them many times.
We haven't really discussed what we will be in Phase III, but there are a number of ways we could extend what we now have.
I'd personally like to extend the Picc a little more, likely from N Ealing to Rayners Lane, and the Heathrow branch as far as Northfields Depot - then we have somewhere else to start 73TS scenarios. And of course, now we seem to know how to do deep tube we could extend the Picc eastwards somewhat through the city.
Regarding the District, the logical next step is continue the S Circle maybe to Tower Hill. We also now know how to do realistic cut-and-cover I think. Might even go as far as Aldgate East.
We can also finish Praed St Jct and Padd (H&C) around to Hams (H&C) - the oldest section of Underground.
And we could continue east from ERD around the N Circle.
Plenty of scope to expand a section at a time, so the next release/update doesn't take 2 years! But as Eddie notes, we have also relied on various mapping tools that are problematic right now so we will have to seek alternatives so we can maintain the route path accuracy we have now. And these things do take TIME to do. Plotting paths, laying track, creating all the bespoke models and stations, accurately placing signals, scenery, etc. So we may ONE day reach the eastern fringes of the DR - but it won't be anytime soon. We would almost certainly do more Picc and finish the Circle first to give more opportunity for scenarios; and then progress east from Aldgate.
And thank you much for your support! I hope the download server survives tomorrow... :-)