I think it may vary depending on whether we are looking at the beginning of the regular season, the end of the season, or the bulk of the season. I'll assume that there will be a season of some sort, despite Covid-19.
I agree with your assumption. I think Megan stays in college and comes back as one of the best players in the nation--on the short list for NPOY. I think Liv continues to improve, with better moves, better shooting, and more strength. Even if we had a young Tina Charles coming in next year, Olivia would start. Some folks are dissing Christyn. I know her shot has been off and she played poorly a few games, but she's still a dynamic player and the 2nd or 3rd best returning player. She played hard and was effective in the AAC tourney. Squeaks will continue to start.
Now the question becomes sort of the opposite of what we had last summer/fall. We knew who the Core 4 would be and we had 4-5 choices as to who would be the 5th starter. There wasn't an obvious answer, and many of us chose someone based on projection and little hard evidence. We had some difficulty finding one good option. For the upcoming season, the problem is not finding one or two, but rather whittling down a list of 5 or so viable options to only 2.
For much of the season, I thought Anna not starting would make it easier for Geno to also bring her off the bench next year. Based on her performance as a starter, I think she continues in that role. She makes plays and is no longer 0 for America. Her shooting skills finally surfaced. And her passing skills are excellent.
There are 3 strong candidates for the other slot. I think Piath is too much of project, Mir is a bit raw, and Nika still has to adapt, so I rule them out, though some of them could be impact players as soon as next season. Aubrey is still raw, but maybe not so much next year. That leaves Evina, Paige, and Aaliyah. Evina played 2 years of major college hoops at Tennessee and was a very highly ranked recruit. I assume she'll be healthy. However, she did not play at UConn and is not a true PG in my opinion. Azura didn't start, so I think Evina follows in that mold. Paige is only a true freshman, but not a typical freshman. The same is true for Aaliyah. She has played at a high level of competition with Team Canada.
Before choosing my 5th starter, I'll note several things: Playing major minutes is more important than starting. Maya, Kaleena, and Stewie, for example, played lots of minutes and often finished games before they became starters. I don't think anyone, including Geno, really knows the answer to this yet. So, we can make statements with total bravado and confidence that could well be wrong. I admit that I don't know about the 5th starter. I'm moderately confident about Anna and very confident about Meg, Liv, and Christyn. My guess on the 5th starter is Paige.