180 and 90 Degree Shutter

[hjfilmspeed]

So I have been shooting RAW with FPS override on 5D3. Im trying to get as close to the 180 and 90 Degree shutters as possible depending on my frame rates. I have been using the shutter fine tuning to get that correct shutter goodness but the amount of fine tuning to use depends on a lot of settings and is different for most frame rates. Its a little time consuming if your shooting even if you have the numbers in your brain. Is there anyway to control the shutter buy degrees or lock it in so to speak? that way one could just adjust his frame rate and or degree and get that perfect motion goodness every time. Maybe im going about it all wrong or maybe theres something im missing. Please let me know what you think or if I should move this over to feature requests. Thank you!!!