If I am not mistaken, the bass-clef horns that transpose up a fourth are (primarily?) for engravers desiring to reproduce historical scores written when that was a current practice. Today’s composers would, I expect, use horns transposing down a fifth for all their horn parts.
Perhaps you’re more au-fait with current horn engraving practices than I am. But I think that using the bass clef for horn parts is still current practice?
If so, the only bass-clef F horn available (without making your own) in the Dorico list is the one that transposes up.
There seems to be quite a lot of discussion/confusion about this, e.g. here: Horn in F - Bass clef - Dorico does not know right transposition - #3 by mdbyyc
But don’t you see! This confusion is exactly what having a “Composer’s Pitch” view would eliminate.
The point I’m driving home is that because “conventions” change, and are not always clear, or the same the world over, or unambiguous, it would be great to have an easy toggle to see what actual pitch has been entered, given that you’re using (perhaps inadvertenty) instrument X from Dorico’s instrument list (that may indeed be there just for the sake of historical scores, or what have you).
Anyway, there are 2 easy solutions available now: One is PianoLeo’s, and the other, of course, is to have a quick peek at the piano roll, where the actual sounding note is unambiguously labelled.
Still, if this falls under the category of a JDI feature, so much the better!