a. Capital ships are not very twitchy. If you like that sort of playstyle, you'll want bigger ships as soon as you can afford them. Frigates can get pretty twitchy, and unfortunately for you, you usually start in one. The biggest you can get for a starting ship is a destroyer. There are tactical commands, and you can play from the tactical map exclusively if you want, but ultimately optimal play involves piloting a ship between orders.
b. Officers are the next line-item to go into the game. Whether the next update will have them or not is unknown, but they're definitely going in before the other big features.