I expect to look poor. IT's what we've seen from Fox's pre-season teams since he's arrived.
That said, the obvious as you mention is watching Trubisky. He should have the 2nd half to show off I'd assume. I fear his line and WR's could be crummy for that, thus making him look worse than he should. But, great players rise above. Maybe Gentry might help...as he's also a guys I'd like to see something from.
I'm just interested in seeing what the rooks do. Shaheen. Stevenson at FB (Hey, I'm old and like FB's!), Jackson in the secondary... On D, I just want to see guys make not greivous error. I expect Fangio will not do anything special. Just run of the mill vanilla.