from experience I can say this comes with a whole set of unique problems and challenges:
- no exes (can also be seen as a positive point, I guess )
- but ALL the kids are ALWAYS there
- no loyalty issues, but "saintification" of dead parents...
- interesting relationships with large number of active grandparents (who are not all too thrilled that the position of their child has been taken over by somebody else)
- etc.

Curious as to your experiences.....