First things first: I'm a 42 years old Nerd and my reflexes are nowhere near the performance of my 16 year old son...
Fallen Order is also more about timing than actually reflexes.
1. Console games gave us those stupid checkpoint and save-point systems because back then they weren't up to the task of saving everywhere... Why this is still in use is actually beyond me. In my opinion, repetition never made any game more exciting or fun. That said, I think the meditation points are well place and rarely too far apart.
2. I love the hud exactly as it is. For me mini maps and objective markers are clutter that ruins my immersion. For me even the highlighted objects for using the force are a bit annoying... Never had trouble finding my way actually.
3. I actually think it's great that there is no fast travel. The feeling of being far away from the drop point and out of reach is a good thing in my opinion and I don't mind going the long way back at all (and I'm currently in the middle of my third play-through.)
4. The wall run in Kashyyyk needed two or three tries, but really wasn't hard using the force jump, otherwise the only annoying parts for me was those where you have to slide down and then exactly target that one rope in mid-air you need to grab... Had to do that one situation on Zeffo over and over. Also doesn't help that I don't have camera control in this situation for whatever reason.
These deficiencies you mention are really just a matter of practice. On my first play-through the game was hard for me, sometimes frustrating, even on Jedi Knight setting, while I now play on Jedi Master with ease. My aforementioned son started on Jedi Master and was fine with that... Young people... :D
