I'm not clear if you are saying you observe that Jana is "slowed" (by injuries) or that you assume so based on flat line development and playing time. Classic bigs sometimes take a while. What you need from Jana this year is to be a reliable safety net against potential injury or foul trouble to Serah W when trying to match up with opponent classic 6' 5" type bigs. Next year is a different story, Jana will need to be fully developed, to the extent capable, or somebody else will fill those shoes