If there is one outstanding characertistic to Rossi's game it's his ability to retrieve the puck and distribute it to the open man with smart, low risk passes. He keeps offensive zone time alive or starts creating it with his ability to forecheck, win board battles, intercept pucks and then - that's the crucial part - dish it to the open man without a turnover. He plays a mean saucer pass (Ek fanning on one the other night), not sure where the "weak flub pass" argument is coming from. That's just trying to find a flaw where there is none.
Regarding his goal total: he is mostly taking shots near the crease, his shooting % is very high right now, probably not sustainable. He is getting into the soft and open spaces around the net and mostly scores from there and on deflections. 20 goals from him this year would be absolutely top notch, I fully expect a longer period of no goals coming up at some point in the season. And that will be absolutely OK.