Going back to the example of Calgary, there was a long thread on talk-ca mailing list in December 2022 (so since the most recent comment here) about road suffix abbreviations specifically in Calgary and the result could IMO most charitably be classified as "no consensus to change" (thread beginning https://lists.openstreetmap.org/pipermail/talk-ca/2022-December/010594.html ).

I haven't seen anything specifically about Regina or Saskatchewan, but nor have I seen anything that would indicate a consensus _for_ changing the current tagging here.