Not sure I’d consider any of those “obstacles”? While X-wind takeoffs and more so landings can be challenging, like most things as you gain skill and experience they become less so. I’d have to say the biggest obstacle (or inconvenience?) when I’m flying is large areas of storms. I do a lot of flying to Asia and crossing the Pacific we often encounter some very significant weather systems, sometimes spanning hundreds of miles. While not scary, they do require some good judgment and experience as how to best navigate them. Sometimes it’s over, sometimes you pick your way through and sometimes you simply have to take the long way around them. Again nothing bad just kind of a pain.