Nice work!
Perhaps worth noting that the prop shrouds on thruster like the T200 and T500 are there to protect the thruster but also have been intentionally designed for hydrodynamic flow. The aim is to maximise the water moving the the thrust direction, while minimising drag, together with thruster placement and orientation to avoid excessively affecting the flow of other nearby thrusters.
You may enjoy checking out some of the other posts with the vehicle-design tag. This one includes an intuition-based understanding of how thrusters work, including in cohesion 