CW, EW and Ono have two distinct advantages. They are both incumbent starters and seniors. Those factors mean a challenger, of whom there are several, probably has to clearly beat them out to start. Having said that, I believe one returning player (Aaliyah) is probable to be a better player than all three this year, another (Azzi) could very well be better her first year, and depending on how you look at it, both Nika and Aaliyah are returning starters.
From that perspective we have 6 returning players that could consider themselves returning starters, one of which has to sit, before even considering challenges from Azzi or Dorka. A player doesn't have to lose a starting position, sometimes they could even improve a little and still be replaced if a star comes along. But clearly the burden is on the challengers to make the decision a clear cut one before changes are likely.
Azzi and Aaliyah could be substantially better than a returning senior, and Dorka is possible but not as likely in my opinion. To me the only returning starter that is a lock is Paige and only Paige.