Space flight maybe be simpler than flight on Earth but that lunar module still had to contend with lunar gravity, landing and launching trajectories and docking, varying landing and launching weights and filming for the camera left on the moon. I don't understand how they managed such a feat 30yrs ago on the processing power of a calculator.
My favourite idea for space propulsion is the large metallic sail that NASA proposed building to catch the solar particles. They used the idea in one of the last Star Wars films, it's kind of goofy!
I read about one idea for space propulsion that involved bending space around the nose of a spaceship to create a tiddlywinks effect. When you think that we are finding stars with Earth-like planets that are 20,000 light years away (and that's just to the centre of OUR galaxy) then we are going to have to work out how to travel faster than any particle in the magnetic spectrum.
As for these new Fusion reactors, the first of which is to be built in France soon, has anyone stopped to consider that when Fission was first invented the first use killed 300,000 people? That may have been a mis-use but what happens with Fusion if you get a Chernobyl?