JC - ace
Latos - borderline ace
Chapman - A huge unknown but potentially a game changer in the rotation
Homer - Finally starting to mature
Arroyo - The object of most of Pack's dreams
Leake - Enigmatic but I still think effective pitcher (if he can pull it together)
Cingrani - My guess is that if the team was desperate he could go into next year as a starter
Corcino - a year away
Stephenson - Three years away (and my favorite prospect)
Travieso - Three / Four years away
You're right, the Braves situation was different because they had money to BUY pitching. But, my point is that their starting staff was their backbone throughout their run.
We won't likely have the luxury of keeping the same three top-of-the-rotation pitchers (like the Braves) over a long period of time, but through drafting, developing, and trading we can maintain the quality of our rotation that's required for the 'sustainability' the Reds management (and fans) desires. If I'm Walt, I'm not trading a quality pitcher from my rotation for offense unless I'm at least seven deep, and have more in the pipeline.
The best way IMO to sustain winning over a period of time is to primarily focus on keeping your starting rotation strong, plus keeping a core group of your offense signed. (like Votto, BP, and Bruce) If we do that, we have a chance every year.