I really appreciate your very comprehensive and detailed reply and the time you took to give these very constructive comments.
I think the problem at 0:14 is the transition, as the focus looks fine on both clips. The 3 different times of day were done with a Litchi waypoint mission and I think that using GPS, they will each be just a metre or so out from each other so it's difficult with my learner editing skills to iron that out - I'm sure there will be a way.
I agree about the gimbal yaw - again it's because most of the video is using Litchi - the only way I could get 3 near identical flight paths. I can't seem to iron out those uneven movements in Litchi waypoint missions.
I also like 'shorter is better' but after trialling my first effort on my family and friends, they all said they wanted to see longer shots to be able to take it all in, so I made the scenes longer. I did speed them up to my satisfaction for a section near the end starting at 3.10 and it looks great to me, though I notice that the clip focussing on the park at 3:17 is just a fraction out of time with the music.
Yes I can see the interest in knowing what the boat did - of course I missed it (I've checked the uncut and it's just out of shot)! This was a Litchi waypoint mission so I let it take it's course - I was just lucky a boat came along during the flight.
I partly agree with you about the changes in speed between 2:27 and 3:03. After viewing it myself now a few times, I didn't quite get the intended effect. I'm using Videoproc and I'm not sure if it's my ageing computer or Videoproc itself, but when I speed up parts of clips, it does not play it back properly until it is exported and I was so impatient to publish that I didn't take the time to re-do the video (it takes about 7 hours to export it at 4K). The speeded up night bit along the waterfront was intended to follow the bus right along to the King Tower, but it fizzled out instead. I speeded it up because I'm aware that my
Mini 2 is not great for night shots, so having something to focus on would take your thoughts away from how grainy it is.
Yes at 3:03 I reversed the clip as it was more dramatic rising up - and yes I should have clipped the bottom, but I was amused by the people walking backwards. I tried to time the speeded up bits in this clip with the music.
The last clip was to wind down the video to the end of the song. To me the music is the most important part, I absolutely love it and am trying hard to find more music of the same quality. I thought the clip rounded things off nicely and the parent and child walking along the path in the trees right at the end I found appealing, though it did mean leaving in that unintended pan. You are most likely right though - it would be better fading it early.
Again Thanks for the detailed critique - I'd already re-edited the video to improve it including fixing a few of the things you mentioned, but I'd already posted the previous version to YouTube, so it's just sat on my computer! I suppose I should make another final edit and re-post it, when I find the time.