Yes I don't know how easy something like that might be, had a quick look at macs but tbh the only thing that matters is Dir Opus. All the software etc like Adobe suite, Sublime and other stuff is cross platform or replacable. Directory opus is not, from what I have seen the options are really lacking, for a pro.
Anything that I can think of to speed workflow, is possible in Directory Opus, and thats even without the Js scripting etc, I don't even need to go that deep, just stringing some basic commands together, will do all I need.
From what I have seen, a mac alternative at best would have 20pc of the functionality of directory opus. Yikes.