Haven't seen any updates here for a while.
I'd love to see a G2/G3 checkbox. Right now when printing curves, if I want them to be smooth, I can't go over 50mm/sec or every now and then my marlin-based printer will stutter and create ugly surfaces. I'd love to give native arcs a try. If it doesn't work, I'd just switch it off!
Alternatively - if I could tell S3D to make curves with fewer segments (realizing that at some point the print would look faceted)...I could probably find a happy medium between speed/stutter/detail.
Thanks for considering this!