Several of you seem to think that Ice will be ahead of Jana on the front court depth chart. I totally disagree with that, having watched both exhibition games in person.
Have you looked at the rebounding comparison between those two? Against BC, Jana had 4 rebounds in 7 minutes of playing time, while Ice had zero rebounds in 12 minutes. Against SCSU, Jana had 7 rebounds in just 9:23 of playing time, while Ice had 3 rebounds in 13:45 of playing time. Jana has shown herself (last year as well) to be a much stronger rebounder than Ice, and that is probably the most important stat for a backup center / power forward.
When Ice didn't enter the SCSU game until the second quarter, I wondered if she was in Geno's chateau bow-wow. I think it's simply that he also judges that Jana is ahead of her in the current depth chart.
I think Jana's limited playing time in the two exhibitions is solely due to her lingering injury, and she seems to be working her way out of that. I did not see any physical limitation in her play in either game, and in fact I wondered why she played so little.
I agree that Serah has earned the starting 5 spot -- she is as strong a rebounder as Jana and a better scorer. But I think Jana is clearly her first backup, and Ice is behind her. My hunch is that this is also Geno's thinking.