Of course it'd be possible, Kim. You know that!
It's obviously just a matter of whether or not the team can see the value (in ms?) of such an option.
I reckon there'd be enough old-school peeps there who'd be sympathetic to this cause in order for it to become a reality. I mean, let's face it, it's not like there'd be much coding involved.
Perhaps a setting in Sys Prefs along the lines of:
"Display time values as" and then we choose from Note Value, BPM and ms.