Hey u/joshuahxh-1,
So I recently swapped from Galaxy watch to Venu 4, and after seeing the stock watch faces, made a beeline to WatchFaceBuilder. So far it's absolutely great and I've already made a decent watchface! However what I've always had on my old watch, was a complication which showed the time remaining on my current timer. It also opened the timer when I pressed on it, but not sure if that's a thing on Garmin watches in general. Well, I digress.
In my search on how to accomplish that (specifically an arc), I've stumbled upon a few posts asking for this in the past. However since the last time, it seems that a timer complication has made it into some stock watch face(s). Just wanted to suggest taking another look into this as it might be more feasible at this point in time! Here's a post where that was mentioned: https://www.reddit.com/r/GarminWatches/comments/1fyxp1y/timer_on_the_watch_face_is_a_huge_improvement/
On another side note: Is the repository for this open somewhere for someone to take a look? I'm a developer myself, and I'd be interested to investigate myself, even if I probably won't be able to accomplish anything - but one can dream!