Maybe I'm just even MORE optimistic that even you!
Look at what you listed. That is 9, count em 9 players with experience! When is the last time the Hawks can say that? Add in Oglesby and White and all of a sudden we have depth that will allow Fran to play more of the style he wants...a get out and run, press, transition type of offense. We couldn't do that this year with concerns about depth, especially at PG.
If each player listed improves some, and since they are in an O that they actually like to run they will all be improved. Some will improve more than other obviously, (personally think Marble will be the most improved as far as from this year to next stats wise). Basabe will be stronger, more confident, will increase his stats for sure. Cartwright will cut down on TO, and continue to score and dish.
Gatens will hopefully benefit with better looks when he has two guys on the floor with him that can create their own shots, and are actual scoring threats (Marble & Cartwright). Brommer should see an increase in PT, so hopefully that translates to more consistency. May, McCabe, and Payne all coming off the bench will be huge also. All guys with experience, that at times will be able to give much needed bench points.
All in all, I think we will see more of Fran's true style of play when he has more options, and doesn't have to worry about exhausting his team. I think we can get to .500 next year, and if things click, and if we get some real contributions form Ogelsby, White, and 2 other recruits (ala Cartwright or Basabe) we could possibly see NIT or the NCAA.
BTW I really enjoy being a optimist!