The fonts used on the theatrical subs cannot be recreated using any existing font--they need to be hand-modified in Photoshop, so a straight SRT-to-subtitle conversion is simply impossible if you want good-looking results. It would be possible to make the burnt-in subs available as separate graphical overlays using the Photoshop files, but it would add complexity--users would need to know to enable them, and many software players still don't get PGS subs right even when enabled. Better to have them burned in, at least for the moment. There's no real downside to burned-in subs except for other languages, and I believe Harmy provides sub-free files to the authors of other projects in other languages, so that's taken care of already.