I've probably seen too much military sci-fi, but in many of them a boarding action during a battle could sometimes turn the entire tide of the battle.
Most of you probably know about Homeworld 2 I'm guessing. Remember the Hiigaran Marine Frigates, or the Vaygr Infiltration Frigate? If you slipped those in in a heated battle carefully, you could even have a chance of capturing an enemy battlecruiser, usually that will totally change the outcome of the battle, even if you lost, the enemy would have mssive casualties.
So mayebe we could have a group of ships like that, or maybe have it more like they do in Nexus The Jupiter Incident where you have dropships with commandoes. What do you you guys think?