Who are the most likely starters and other key players?

More than likely it'll be Wells, Jones, Johnson, and Wilson as they are the top returners with the most experience.
I'm not sure who will run the point guard position. It should be a battle between McKenzie Green, Jordan Nixon, or the incoming freshman Kay Kay Green

Next year will be scary ... maybe Blair should consider calling it quits.

Scary how ??

Blair is point guard oriented. He normally has one with some experience ready to step in the starting role.
Green did not play much this year. We have not seen Nixon play, although she has gaudy stats from HS.
Hopefully the coaches will develop that position, and as the season goes along, whoever starts will be improving.

The other 4 positions have a lot of experience. Wilson, Wells and Jones are all very good at the 2, 3 and 4 positions. At the 5. Johnson needs to work on her offensive skills and moving her feet better on D, and quit picking up some dumb reaching in type fouls that sit her on the bench way too much.

Blair still building his career wins and will likely be here a while longer.

There is no battle for the PG position, it will be Jordan. Would've definitely played this year. Transfer with experience may be brought in to add depth.