What question marks? Especially now that Dorka declared she is returning? The only thing I see is whether Aubrey comes back whole and stronger (physically and mentally). She is likely going to see action as a guard/wing.
Question marks is a relative term here. Backup 2/3 may not be a major concern, but I think it is fair to say for a loaded team it may be more of a concern than any other part of the roster. This year we had 6 guards, which at times was not enough when we were down to 3. Next year with no additions we have 4. I count Aubrey as mostly a PF who could certainly defend the 3, but is not a natural player there. Nika could back up Azzi but is clearly not a SG.
So if everyone was healthy, assuming Paige, Azzi, and Caroline start, you could have a 4 guard rotation with Nika backing up all three. Aubrey perhaps could be used to backup Caroline, but with mostly Nika and some Aubrey providing the backup guard minutes you are getting great defense, good rebounding, and in Nika a passer. But the kind of perimeter scoring you expect from 2's and 3's is missing, and you are vulnerable to any injury of a guard.
Someone like Abby Myers could be a 2/3 backup or even a threat to start, but provide the perimeter traits Nika and Aubrey lack along with leaving us in a pretty good position if one guard goes down. With someone like that, you have far more situational versatility, with defenders, a shooter and a passer to draw on, and even with a good guard addition, that would put us at 5, one less than last year, so I think it should be the most significant priority and a reason to explore the portal.