Originally I was planning to go this year. However, one of my sons have joined a summer program and we may not have enough time to go to Europe for a meaningful trip. Anything less than 2 weeks is not worthwhile.
Other than Neuschwanstein, I don't know if there is anything else in Fussen attractive to see. I have not been to Fussen. I dropped my plan going to
Neuschwanstein last summer as I learnt that there was some construction and part of the castle was covered by scaffolding.
B y the way, quite a few people who have visited the castle said it is quite spartan inside.