[Crash-utility] Determining values of arguments and local variable in x86_64 crash dumps

I've always determined the values of locals and parameters/arguments the hard way, i.e. by looking at the disassembly and determining where the values are stored, etc. I do note however that gdb is pretty damned good at "reading" variables for user programs, which prompts me to ask.. why cannot we do this in crash? (Perhaps we can and I'm just missing something) Assuming that crash cannot locate locals/args, is there any chance crash might (someday) determine where a register is spilled higher up the stack frame? Yes, I realize this is all wishlist stuff.. but it cannot hurt to ask (can it?) - jim