Many times I'm looking at Bibles, I want to jump to a commentary on that reference - and more often than you imagine I don't have a commentary already open. (This is particularly true when I'm following cross references, looking up parallel passages in the Synoptics, or checking out OT quotations in the NT).
At the moment, I have to either (a) open the library, type type:commentary Luke or something similar, and find my favourite commentary from the rather long list. Or (b) I have to remember the author of my favourite commentary, and type bock luke or similar in the command bar. Either way, it's a dozen or more keypresses or clicks, and relies on me remembering my favourite commentary (which is fine for Luke, but less easy for Zephaniah).
There's an easy solution.
When reading a Bible, have a function key open your favourite commentary according to your prioritisation. F6 would be good. Even better, add a button to the Bible toolbar (next the the interlinear button). It would be worth the screen real estate - I would click that button several times a day. I'm sure others would too.