I just had a moment of FArt inspiration and had to make this a reality.
I like floaty bits ships quite a lot, but I am unsatisfied with what we have in canon, so I decided to make a quick concept.
Floating parts are mostly a better way to isolate systems from the crew, like pylons, but with extreme flexibility for refits, environments, and disasters. The isolated sections are not meant to have anyone in them except in unusual emergencies or in drydock.
Each section is fully independent, and has a primary role in the configuration. The command section houses personnel, sensors, weapons, and defensive systems, but still has a secondary power sources, engines, and deflectors. The reactor section has the primary power source, fuel, and primary navigational deflector/sensor array as well as its own propulsion. The engine sections house all the primary means of propulsion, and Bussard collectors as well as their own deflectors and sensors. The combination of specialized sections allows the entire ship to be greater than the sum of its parts, while also being flexible and survivable enough that any one section can operate on its own in an emergency capacity.
The sections are connected to each other through multidimensional channels. Power is transferred non-physically through the same channels, and have conventional power beaming backups and tractor beam arrays in case of irresistible multidimensional distortion. Connection through dimensional channels allows power and communication transfer between sections to be maintained over significant distances.
If you want more power you could add a second reactor section, or for more speed just add as many engines as you want. Also, the reactor section could spin on any axis to reorient its deflector to use as a weapon. If things are really desperate, use an engine as a mace.

I like floaty bits ships quite a lot, but I am unsatisfied with what we have in canon, so I decided to make a quick concept.
Floating parts are mostly a better way to isolate systems from the crew, like pylons, but with extreme flexibility for refits, environments, and disasters. The isolated sections are not meant to have anyone in them except in unusual emergencies or in drydock.
Each section is fully independent, and has a primary role in the configuration. The command section houses personnel, sensors, weapons, and defensive systems, but still has a secondary power sources, engines, and deflectors. The reactor section has the primary power source, fuel, and primary navigational deflector/sensor array as well as its own propulsion. The engine sections house all the primary means of propulsion, and Bussard collectors as well as their own deflectors and sensors. The combination of specialized sections allows the entire ship to be greater than the sum of its parts, while also being flexible and survivable enough that any one section can operate on its own in an emergency capacity.
The sections are connected to each other through multidimensional channels. Power is transferred non-physically through the same channels, and have conventional power beaming backups and tractor beam arrays in case of irresistible multidimensional distortion. Connection through dimensional channels allows power and communication transfer between sections to be maintained over significant distances.
If you want more power you could add a second reactor section, or for more speed just add as many engines as you want. Also, the reactor section could spin on any axis to reorient its deflector to use as a weapon. If things are really desperate, use an engine as a mace.