There is an unanswered question about this on a different board from a few months ago:
https://forum.nostalrius.org/viewtopic.php?f=32&t=1555
Here is the tool in question:
https://www.worldofcorecraft.com/conten ... d-view-fix
Basically, before Wrath, the FOV scaling method for widescreen was garbage. This little hack fixes that for vanilla and/or BC. Read the link if you need specifics.
I'm pretty sure none of us are playing on a 4:3 screen so "lol vanilla ecksperyunss" isn't really a valid reason why not. In any case, I just want to get an explicit confirmation that this is allowed (or not) before I use it and get banned for hax.
Thanks.