I guess there have been some changes in this area. So I take it OPTIMIZATION_LUT_INV_FAST has now taken taken the place of not using FINALIZATION_EXACT. And the exact mode is used if you don't include the flag?
What sort of UI for this quality stuff are we expecting to present to the user? I see that OPTIMIZATION_DEFAULT = OPTIMIZATION_VERY_GOOD, which includes OPTIMIZATION_LUT_INV_FAST. And there's OPTIMIZATION_LOSSLESS, which does not and has other flags as well.
I currently provide a back door to doing the exact LUT invert, but should OCIO apps now give a general Draft/Best option for all OCIO operations?