Well I have to try, the person I spoke to said she would pass on my request for functioning pull-ins to the relevant department, whatever that means.
I'd like the tREF setting as the Asus BIOS does not correctly set it, DFI is the only manufacturer I know who's BIOS correctly sets tREF at various ram speeds. All we can do is ask. Finer control of skews would be great for fine tuning and stepwise (example 8 steps) clock/data drive strength settings would be a great addition.
However, as you said, functioning pull-ins is the main priority; it's just ridiculous that a BIOS option like that can be broken and not function on every single BIOS ever released for the board, especially considering it's a R0G board.