If there's a positive from opening day, then I'd guess it'd be the performance of some of the relievers who figure to be in the middle of the bullpen - Ro. Garcia, M. Barnes, and Floro. Too soon to say what we have there, but Barnes and Floro may end up being useful trade assets, and Garcia you can hope can be a reliable lefty with multiple years of control.
OTOH, Rainey is not showing signs of recovering velocity that had been key to his best years.