Yes, we have a strong defence that is well balanced age wise - Grimes nearing the end, but Balta/Gibcus/Young/Short/Baker/Rioli will be strong core for the next five years at least. Broad has re-signed, Tigger stills some good years left so there's your experience along with Bakes/Rioli.
Mids - Taranto/Hopper/Bolton as the core, Dusty still as the veteran. The youth is the current issue - Ross, Sonz, still have a long way to go. Dow looks like a bust. But we have a strong core for the next 5 years which we can build on.
Key forwards are the problem - Jack will go, Lynch still so important. I believe we can trade/FA in another Lynch type. Smalls - MRJ, Cumbers - still to be proven. Ryan a possibility.
We are not as badly placed as many here believe, and as for trading out Balta or Bolton - not a good strategy.