Q; Why didn't security throw Offenhouse off the Bridge when so ordered by Riker?
A; It looked as though they and everyone else on the Bridge, from Picard down, were transfixed by their first sighting of a Romulan warbird on the viewscreen. You have to remember that for many, perhaps all of them, this was their first sighting of something virtually on a par with legend. We might assume that they were understandably fazed by this, and that Picard grasped this, and thus took no action.
Q; Why did Picard instruct Offenhouse that the companels were only for official ship's business when that is clearly nonsense?
A; We might assume that this was to keep him from using them and making a nuisance of himself, of course!
Data, as soon as he and Worf materialise on the cryonics vessel, pulls out his tricorder and comments that the atmosphere is "minimum oxygen". Shouldn't he have checked that out before he beamed aboard, especially in the company of Worf who wasn't wearing any kind of breathing apparatus?
Interesting that the cold-store had a proper cold-store handle on it, as I'm sure anyone in the cold game will have recognised . . .
Um. Picard and Troi between them determine that the Romulans are "counter-punchers". Wouldn't popping up out of nowhere and destroying umpteen outposts be a little forward for, ahem, "counter-punchers"? No-one seems to consider that . . .
Amusing, with the benefit of hindsight, to see Marc Alaimo playing, well, the same character he plays in DS9, essentially. Just different makeup.