This feature could be added to all the font sizing,.. but I use Marquee for Text Overlay of the Dynamic Media info of every file being played (IE: Filename/Time/Duration) --
The only option here is to set it by "Pixels" in the Marquee advanced preferences.
That sounds great, but the problem is, if you don't have ever single video at the exact same resolution -- You have big problems with the size of your marquee text overlay.
High resolutions (Ie: 1280x720) cause the Marquee text overlay to be tiny, unreadable. Then lower resolutions, ie: 640x360 will make the text giant, taking a huge amount of room of the actual screen. There is not middle ground currently.
Thus,.. a "relative percentage" size would be perfect. Where it would utilize a relative size of the full screen being played -- X and Y percent, so no matter what resolution video is being played your text remains the exact same size!
Thanks!