For me, it does little sense that thrusters have max temperature 800 but damage threshold only 400. Everywhere else are those values swapped (assemblers have 150 / 250, furnaces 400 / 650).
It would be great if thrusters could reach at least 550 since you could then use excess heat to power heat exchangers instead of wasting heat into space. That would in itself be pretty interesting challenge - if it was your only power source, you would generate power only while moving.
