I solved the "one photo in multiple albums" EXIF problem by using Keywords. Each album is a Keyword.
But yes, there are some other limitations that would be much harder to solve. But it's a tradeoff I've decided to make - if I can't figure out an EXIF-based solution then I'm not going to invest time using it because it will likely be lost in 5-10 years.
But yes, there are some other limitations that would be much harder to solve. But it's a tradeoff I've decided to make - if I can't figure out an EXIF-based solution then I'm not going to invest time using it because it will likely be lost in 5-10 years.