More thruster

I would like more thruster ...

I have several independent ideas about thrusters:

during my explanations, i speak about size using [width x height x depth.(inside + outside)] format.

1- More sizes of thrusters: we have just 2 sizes : a small [1x1x1.(1+1)] and a large [3x2x2.(1+1)] ion thruster. I think we can have more size (3 or 4 among [1x1x1.(1+1), [2x2x2(1+1)], [3x3x3(1+1)], [4x4x4(1+1)], [5x5x5(1+1)] ). This idea is for other thruster-type too. Optionaly, bigger thruster can be more efficient on electric consumption but less efficient on thrust/block.

2-More type of thrusters : I would like a powerfull/less power-efficient electric thruster (Arcjet?). Typiquely, i think about a [1x1x1(1+1)] with 3 times the power of ion thruster but 3 times less efficiency (so with 9 times more consumption).

For balancing, we can make small change on ion thruster (-20% power, +20% efficiency). Think to ajust Hydrogen thruster too.

3-Changing thrust by speed :

P is the thrust at the speed 0 m/s, Vmax the maximum speed (currently 110 m/s) and Vz the current speed in the axis of the thrust, the thrust Pz provided by the thruster will be Pz = P * (Vz / Vmax). This allows the inertial damperer to be more effective in braking and correcting trajectories without having to use more than 100% of the power. It also makes it possible to limit the speed without having the impression of being faced with a wall in acceleration.

Optionally, different types of thrusters could have different Vmax. (Atmo 70m/s, Ion 90m/s, Arcjet 110m/s, Hydrogen 140m/s)

English is not my native language, sorry for mistakes.