I agree with Maz that some indicator as to which thrusters are being fired would be good.

Is the acceleration physically accurate? Like, I understand that acceleration due to gravity does change based off distance but at a scale of hundreds of meters, it really should be constant acceleration, no?

I dunno, it was just weird how I had to use the spacebar much more as I got closer to the moon, when I should have been able to do impulses at the same rate as normal.

I really like the idea.

Some particle-system would be great to indicate wich thruster is active.

Maybe add some challenges/limitations: time limit, limited fuel, limited allowed speed.
Or a random landing site, so that you can't do the same every time.

Super Technical ! Hard to master this. I know i'll play this multiple times to get comfortable.