Well, I don't think we need shirtless unless we are doing Orions or Risa Swimware, but if we are doing open V collor like the TOS captain's wrap around, a shaved like Kirk, and Hairy like Riker would work. We don't really need all the variations like slightly hairy Spok, or very Sparse Picard. Kirk & then Riker were shirtless the most I think. So one for each of those two would be nice.
I did ask for heavage (something that became fashionable for men in 2009) as well as cleavage (fashionable for women since...before pavement) before this set was released. I recall others had cited the bare-chested KDF Orion Males as precedent for STO. Not that completely bare-chested Starfleet officers was the interest. When the set was released, I said to myself, "I'm supposed to believe that the men of Starfleet are too bashful to wear this under their jacket? Riiiight...".