I don't know. I guess it would depend on the setting and circumstances. This type of series could easily be done if it was set during the Dominion War. You could even have it taking place during the border disputes between the Fed and Cardassia, like O'Brien participated in. These could be stories about front line soldiers, ala The Siege of AR-558.
I'm not so sure about elite commando stories. Just doesn't seem true to how the Fed operates. You think about the fact that the Fed had disastrous first contact with the Dominion, but it was Romulus and Cardassia that put together a clandestine op to take out the Founders. Now I could see a series about Starfleet Intelligence (non Section 31) and the ops that they undertake working.
I'm not so sure about elite commando stories. Just doesn't seem true to how the Fed operates. You think about the fact that the Fed had disastrous first contact with the Dominion, but it was Romulus and Cardassia that put together a clandestine op to take out the Founders. Now I could see a series about Starfleet Intelligence (non Section 31) and the ops that they undertake working.