I would have liked to have the best of both worlds, ie Mac OS Scripts Folder + Fastscripts with all the advantages of Dropbox syncing across devices, and I then discovered that you had addressed the same issue. So I can get both.
I tested 2 scripts: the KBM engine and a simple Popclip appear script. Both work in a Dropbox folder
I tried to decipher your explanation but it's too difficult.
I read in multiple sources that symlinks and aliases are not recommended with Dropbox. I am not questioning your approach. I am trying to understand.