CalTRACS says 1200 vehicles peak peak westbound in the PM, 800 eastbound in the AM peak hour in May, 2024. That is a marginal drop from pre-pandemic.
Peak hour on 9th east bound (west of 11th) is 4900 vehicles (May, Wednesday). Left turns 500, straight 2400, right turns 350 (August, Thursday). So, raising those by 50.7%, 753 left, 3617 straight, 528 right.
I can see moving those 800 vehicles from the reversal to 9th could push that intersection much closer to failure. Have to remember that before the reversal was in place that many many more vehicles traveled into Sunalta during rush hours.