I think there is more reason for optimism than pessimism.
CNK should hopefully be injury free and back to his best.  We have a great back up in 
TT if he isn't.
RTS and 
DWZ on the wings are fine and gives us positional coverage.
Ali is x factor and 
Pompey or 
Berry are solid enough 
TMM and LM are an exciting prospect particularly if 
TMM captures his form at 7 this year and LM continues where he finished this season. 
Forward pack looks strong. 
Tohu back injury free and JFH inspiration. 
A few ifs in there but the main issues will be defensive improvement (in our control),  number of injuries (out of our control) and AWs improvement as a coach, which ge seems to be saying the right things.  
Top 8 looks achievable with an outside chance of the top 4.