I can relate to most of those.
The one you miss, is that somewhere along the line you wish you'd done an earlier project a lot better now you know how to do it better. Caulking, for example.
That's always the killer for me.
But the greatest bit is when all the individual skills come together. The electrical, the plumbing, the remodeling. Then, you feel like an artist.
I don't know if professionals licensed in individual trades ever get that feeling, which is a shame.