Blind Jumps were a thing, and they'll re introduce them with the physical Quantum Travel rework.
They were a thing until CIG decided it wasn´t. I presume that was due to no issues or limitations at all in their engine and implementation right

? Either way SQ42 was also announced for 2014, then 2015, then 2016, then 2017, then a beta in 2020 then "done when it is done". So who knows?

In the mean time it seems their engine is severely limited, forcing them to scale down. Otherwise they would have increased allowed speeds in quantum and allowed for full steer control (not even just blind jumps), allowing them to deliver a practical 1:1, long time ago.
64Bit precision is a limitation? by what measure did you arrive at that equation?
You're not answering my question, why don't EDO have 1:1 earth like worlds?
64b is not a limitation in itself, if properly implemented, like FDEV´s. To the contrary. The problem comes when it is poorly implemented which is what probably has happened in the case of CIG.
As for your question I have already answered the part that can be answered. 1:1 scale does not seem to be an issue for FDEV given track record. Do they have a problem with earth like words other than the scale? No idea mate. Not even sure if they have started working on them.