Well, I limited myself to college because it is too much to say WNBA. I guess you are thinking Sue Bird / Diana Taurasi at their 2002 best? Probably would not break the starting 5 (4 seniors + DT) but would get a heck of alot of minutes assuming Paige was not overawed with the team.
I say this because it may be that Paige did benefit to some degree from a weaker and younger team last year not allowing her to be awestruck / passive etc making her stand out as a player and leader on practice day 1 and fueling her confidence.
Now having Paige / Diana in the 2003 back court would have been something.