when re they going to make a “wheel” shaped spacecraft so they can artifically create at least SOME gravity
Likely right after someone invents a frictionless material for the huge bearings that will be needed at the hub of such a "wheel".
If you ask me, there should going into deep space without one. Traveling that far away, they should be bringing their own full size space station along to live in.
But there are better and brighter people than myself in charge of these things.
I have often wondered the same thing. In fact, Hollyweird has depicted this in several movies. Considering all that has to be done is to build a Tube and spin it rapidly, it seems simple. The craft would need to be assembled in space and that might be challenging.
I expect the problems are: for some components like navigation, experiments and communications, there needs to be a stable platform (not rotating).There may be a need to have a component of the craft that is not rotating. Anything attached will create friction and thereby rob energy and create wear on components. It's a failure point that is difficult to test. Also, maintaining the balance in a gyroscopic vessel would be critical for the craft to maintain a constant trajectory without regular correction (more energy consumption).
It has to be a fairly large diameter to be practical.