Thank you Dave for the welcome and such detailed insightful commentary!
I find it quite pleasant and very interesting to hear that the creative licence for the various accidental shapes is so liberal. Such generous freedom certainly will prove a valuable asset to all of us working on the development of Sagittal.
For clarity, by "straight flags" do you refer to the former or the latter?
For the former I did indeed notice the potential for confusion, as well as with
(tao) and the conventional
(flat) symbol. I did take note of the fact that William's
(tao) continued to curve rather than end in a vertical stroke. I however, omitted that for the same reason. As the standard quaver flag curves in, I thought that there was actually more potential for confusion if the convex accidental flag ended with a curve rather than a straight line.
I was slightly cautious to attempt a more generous curve, as found in William's more scroll-like
(dao), hence the somewhat conservative design, but now knowing the extent of my creative licence I will certainly experiment with some more innovative designs!
(Though I will note that I think that I think William's scrolls aren't ideal, as I think that increasing the concavity that much could lead to a confusion with a conventional
(flat), as it essentially curves back into a full revolution the same way.)
I noted that in the heraldic descriptions for the accidentals, left/right counterparts actually had different origins rather than simply being mirrors of each other e.g.
(tai) originates from Archytas's arc, whilst jai originates from Demeter's' scythe. I agree that a combination of serif and sans-serif is not aesthetically pleasing, but would I be correct to therefore derive that each left/right counterpart needn't necessarily be mirrors, but in fact can have quite substantial variety as long as the general concavity (convex in this case) remains the same?
I'll follow up with a post depicting the results of a comprehensive distinctiveness test you recommend soon!