Hawker750,
I hear what you are saying and I knew what you meant, your answer was just way too generic to make any sense. The discussion has been about whether FL75 is an applicable level restriction for a direct clearance. I say not, it's a minimum along a STAR segment which the OP wasn't cleared for. Any "safety altitude" given as a Flight Level I cannot take seriously anyway. In the absence of ATC instructions that leaves you with the MSA, unless you are and stay VMC.
Given a direct clearance like that ATC has to help you out with altitudes until DIXIR. Without radar, min. altitudes can still be based on DME.