I would say if you are planning on getting every last % out of jumping then you have to stay with your natural take off leg. I would bet if Ennis stayed on her other leg her PB would be better now.
Look up the Ghana long jumper, he won nearly everything a few years back but then was forced to change his take off leg. Even a few years on hes still 30cm down. Maybe at lower levels it wont be as noticable, but at the top everything has to be perfect.
You could still get PB’s sure, but likely lessens your chance to be right up there. But hey, if God will fix it then theres no need to change right?