[X] Plan Reorganization
Pull out of Judas 1
Research The Warp/Find the Pontus STC.
Search all available systems for the most ideal.
Set up some form of system to find psykers early.
Find a way to safely neutralise said psykers.
Advance Warp Buoys Technology
Obtain/create a scientist specialised in Warp Communication
Engineer a solution to Warp Storms.
Fully exploit the system of it's resources.
Build several defence fleets.
The Old Ones literally created the warp and it was their desperate attempt (which failed horribly) to win War in Heathens. And so , if it could be created , it can also be destroyed. Oh , and if the Eldar history tells anything , it is about not trusting the Immatereum
No they didn't. They created the webway. They used the warp, though it was calmer in their time.
Before they met Necrontir they fed on stars instead. And they don't even have a soul , what proves the possibility of living without it in the setting.
And also their tech is 100% warp-free , and I don't think that race that fought the Old Ones evenly lived without FTL
Sure, but then they did feed on souls. So the capability was there even when they were star dwellers.
As for FTL it's kind of up in the air. Sometimes the Necrons have their own FTL other times they tap into the webway. I'm not sure what the current state of canon is in regards to them.