I did think it was a good episode for team Dog, pretty-wise....
But also for team A, seeing as Aramis ' shirt was almost off at various stages.
Sure team Athos enjoyed it too, and everyone else.....
I think the Pauline bit was there 1. To provide and interesting side line to the diamond story, 2. To give Aramis more back story, 3. To allow Athos to say "aramis is my penance" (in other words to give room for some disagreement between the characters), 4. Because she was pretty.