Now that the old Hexbear fork has been officially abandoned, this community will be used as a space for meta-discussion on the site itself.
Take for example my banner image. On mobile you can see Isabelline standing at the opening of whatever the fuck that is, looks great. Roughly a 16:9 window, maybe 1.85:
On desktop she is cut out 
scope asspect ratio looks awful. Mods pls 
Css media queries
:/ If I could control how it cropped...
The extent of my front end knowledge is "use bootstrap" but I think it would require a media query that for mobile would use a different image file vs desktop, to be to your satisfaction
What if they just did the same, or like specified a resolution, or an aspect ratio? Anything?